<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 72-year-old man presents to the emergency department when he discovered a large volume of blood in his stool. He states that he was going to the bathroom when he saw a large amount of bright red blood in the toilet bowl. He was surprised because he did not feel pain and felt it was a normal bowel movement. The patient has a past medical history of diabetes, obesity, hypertension, anxiety, fibromyalgia, diabetic nephropathy, and schizotypal personality disorder. His current medications include atorvastatin, lisinopril, metformin, insulin, clonazepam, gabapentin, sodium docusate, polyethylene glycol, fiber supplements, and ibuprofen. His temperature is 99.5F 37.5C, blood pressure is 13284 mmHg, pulse is 80min, respirations are 11min, and oxygen saturation is 96 on room air. On physical exam, the patients cardiac exam reveals a normal rate and rhythm, and his pulmonary exam is clear to auscultation bilaterally. Abdominal exam is notable for an obese abdomen without tenderness to palpation. Which of the following is an appropriate treatment for this patients condition?? A: Cautery of an arteriovenous malformation, B: IV fluids and NPO, C: NPO, ciprofloxacin, and metronidazole, D: Surgical excision of poorly differentiated tissue, E: Surgical resection of a blood vessel,  <response>: This is a clinical vignette about a 72-year-old man presenting with bright red blood per rectum without associated pain or other symptoms. The key details in the vignette are the patients age, comorbidities like diabetes and hypertension, lack of abdominal pain, and bright red blood per rectum. Based on the presentation, the most likely diagnosis is a lower gastrointestinal bleed, possibly from a colonic source like diverticula, angiodysplasias, or colon polypscancer. Cautery, surgical resection, IV fluids, and antibiotics are not indicated as initial management. The appropriate next step would be to stabilize the patient, resuscitate if needed, determine the severity of bleeding, and localize the source. Endoscopy and colonoscopy are useful for both diagnosis and potential treatment.B: IV fluids and NPO 