<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Please refer to the summary above to answer this questionFurther evaluation of this patient is most likely to show which of the following findings?Patient InformationAge: 28 yearsGender: F, self-identifiedEthnicity: unspecifiedSite of Care: officeHistoryReason for VisitChief Concern: Im not making breast milk anymore.History of Present Illness:1-week history of failure to lactate; has previously been able to breastfeed her twins, who were born 12 months agomenses resumed 4 months ago but have been infrequentfeels generally weak and tiredhas had a 6.8-kg 15-lb weight gain over the past 2 months despite having a decreased appetitePast Medical History:vaginal delivery of twins 12 months ago, complicated by severe postpartum hemorrhage requiring multiple blood transfusionsatopic dermatitisSocial History:does not smoke, drink alcohol, or use illicit drugsis not sexually activeMedications:topical triamcinolone, multivitaminAllergies:no known drug allergiesPhysical ExaminationTemp Pulse Resp BP O2 Sat Ht Wt BMI37C98.6F54min 16min 10157 mm Hg 160 cm5 ft 3 in70 kg154 lb27 kgm2Appearance: tired-appearingHEENT: soft, nontender thyroid gland without nodularityPulmonary: clear to auscultationCardiac: bradycardic but regular rhythm; normal S1 and S2; no murmurs, rubs, or gallopsBreast: no nodules, masses, or tenderness; no nipple dischargeAbdominal: overweight; no tenderness, guarding, masses, bruits, or hepatosplenomegaly; normal bowel soundsExtremities: mild edema of the ankles bilaterallySkin: diffusely dryNeurologic: alert and oriented; cranial nerves grossly intact; no focal neurologic deficits; prolonged relaxation phase of multiple deep tendon reflexes? A: Increased serum sodium concentration, B: Decreased serum aldosterone concentration, C: Increased serum FSH concentration, D: Decreased serum oxytocin concentration, E: Decreased serum cortisol concentration,  <response>: This is a patient with recent lactation failure who has other symptoms suggestive of hypothyroidism, including fatigue, weight gain, bradycardia, prolonged relaxation phase of deep tendon reflexes, and dry skin. The history of severe postpartum hemorrhage raises suspicion for Sheehans syndrome leading to pituitary dysfunction. Choice A can be ruled out because hyponatremia would be more likely with hypothyroidism or pituitary dysfunction. Choice B is incorrect because aldosterone levels are not directly affected by hypothyroidism or Sheehans syndrome. Choice C is plausible because hypogonadotropic hypogonadism from pituitary dysfunction would lead to decreased FSH. Choice D can be ruled out because oxytocin levels would not be expected to decrease with the conditions suspected in this patient.Choice E is the most likely because pituitary dysfunction from Sheehans syndrome could lead to secondary adrenal insufficiency and low cortisol levels.E: Decreased serum cortisol concentration 