<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 6-day-old infant who was born via uncomplicated vaginal delivery at 39 weeks of gestation is brought to the family physician for poor feeding. The mother received adequate prenatal care throughout the pregnancy, and has no medical conditions. On physical exam, the infants temperature is 36.5C 97.7F, blood pressure is 7045 mmHg, pulse is 170min, and respirations are 40min. The infant has dry mucous membranes, capillary refill of 4 seconds, and a depressed anterior fontanelle. No abdominal masses are noted. Genital exam shows enlargement of the clitoris with fusion of the labioscrotal folds. Serum chemistry is remarkable for hyponatremia and hyperkalemia. The infants karyotype is 46,XX. Which of the following findings are most likely to be discovered upon further workup?? A: Increased aldosterone, decreased cortisol, B: Decreased aldosterone, increased 11-deoxycorticosterone, C: Increased sex hormones, increased 17-hydroxyprogesterone, D: Increased sex hormones, decreased renin activity, E: Decreased cortisol, decreased sex hormones,  <response>: This is a clinical vignette describing a newborn infant with ambiguous genitalia and laboratory findings consistent with adrenal insufficiency hyponatremia, hyperkalemia. The infant has physical exam findings concerning for congenital adrenal hyperplasia CAH, including clitoromegaly and fused labioscrotal folds. The question asks which hormone findings are most likely to be discovered on further workup. Choices A and E can be eliminated, as cortisol is expected to be low in CAH. Choice B may be seen in some forms of CAH, but is less likely than the findings in choice C. In classic CAH due to 21-hydroxylase deficiency, which is the most common cause, excess adrenal androgens sex hormones are produced due to lack of negative feedback from cortisol. 17-hydroxyprogesterone is also typically elevated. Therefore, choice C matches the expected hormone findings in this infant.C: Increased sex hormones, increased 17-hydroxyprogesterone 