<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 31 year-old-man presents to an urgent care clinic with symptoms of lower abdominal pain, bloating, bloody diarrhea, and fullness, all of which have become more frequent over the last 3 months. Rectal examination reveals a small amount of bright red blood. His vital signs include: temperature 36.7C 98.0F, blood pressure 12674 mm Hg, heart rate 74min, and respiratory rate 14min. Colonoscopy is performed, showing extensive mucosal erythema, induration, and pseudopolyps extending from the rectum to the splenic flexure. Given the following options, what is the definitive treatment for this patients underlying disease?? A: Sulfasalazine, B: Mesalamine, C: Systemic corticosteroids, D: Azathioprine, E: Total proctocolectomy,  <response>: This is a patient with symptoms and examination findings consistent with ulcerative colitis, including lower abdominal pain, bloody diarrhea, and colonoscopic findings of erythema, induration, and pseudopolyps from the rectum to the splenic flexure. The question asks for the definitive treatment for the underlying disease. Sulfasalazine, mesalamine, and systemic corticosteroids are medications used to treat ulcerative colitis symptoms but do not treat the underlying disease. Azathioprine is an immunosuppressant sometimes used to maintain remission in ulcerative colitis but again does not definitively treat the underlying disease. Total proctocolectomy, or complete surgical removal of the colon and rectum, is the only definitive cure for ulcerative colitis.E: Total proctocolectomy 