<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 75-year-old man presents to the clinic for chronic fatigue of 3 months duration. Past medical history is significant for type 2 diabetes and hypertension, both of which are controlled with medications, as well as constipation. He denies any fever, weight loss, pain, or focal neurologic deficits. A complete blood count reveals microcytic anemia, and a stool guaiac test is positive for blood. He is subsequently evaluated with a colonoscopy. The physician notes some small pouches in the colon despite poor visualization due to inadequate bowel prep. What is the blood vessel that supplies the area with the above findings?? A: Ileocolic artery, B: Inferior mesenteric artery, C: Middle colic artery, D: Right colic artery, E: Superior mesenteric artery,  <response>: This is a medical question asking about the blood vessel that supplies the area of the colon with small pouches in a 75-year-old man with chronic fatigue, controlled diabetes and hypertension, constipation, microcytic anemia, and a positive stool guaiac test. The key details are the small pouches seen on colonoscopy, which suggest diverticula, and the positive guaiac test, suggesting gastrointestinal bleeding. Diverticula most commonly occur in the sigmoid colon, which is supplied by the inferior mesenteric artery. Therefore, the inferior mesenteric artery is likely the vessel supplying the affected area.B: Inferior mesenteric artery 