<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 33-year-old woman comes to the physician because of a 4-month history of intermittent lower abdominal cramps associated with diarrhea, bloating, and mild nausea. During this period, she has had a 5-kg 11-lb weight loss. She feels like she cannot fully empty her bowels. She has no history of serious illness. She has a high-fiber diet. Her father is of Ashkenazi Jewish descent. She appears well. Her temperature is 36.9C 98.5F, pulse is 90min, and blood pressure is 13090 mm Hg. The lungs are clear to auscultation. Cardiac examination shows no murmurs, rubs, or gallops. Abdominal examination shows mild tenderness to palpation in the right lower quadrant without guarding or rebound. Bowel sounds are normal. Test of the stool for occult blood is negative. Her hemoglobin concentration is 10.5 gdL, leukocyte count is 12,000 mm3, platelet count is 480,000 mm3, and erythrocyte sedimentation rate is 129 mmh. A barium enema shows ulceration and narrowing of the right colon. Which of the following is the most likely diagnosis?? A: Ulcerative colitis, B: Celiac disease, C: Intestinal carcinoid tumor, D: Crohn disease, E: Diverticulitisn,  <response>: This is a clinical case scenario describing a 33-year-old woman with a 4-month history of lower abdominal cramps, diarrhea, bloating, nausea, and weight loss. She has a family history of Ashkenazi Jewish descent. On exam, she has mild tenderness in the right lower quadrant. Lab tests show anemia, elevated ESR, and a normal stool occult blood test. A barium enema shows ulceration and narrowing of the right colon. Based on the chronic diarrhea, abdominal pain, weight loss, elevated inflammatory markers, and colonic ulceration and narrowing isolated to the right colon, the most likely diagnosis is Crohn disease. Ulcerative colitis would typically involve the entire colon. Celiac disease would not cause colonic narrowing. Carcinoid tumor would be unlikely in a 33-year-old and would not cause chronic diarrhea. Diverticulitis could cause right-sided abdominal pain but not the chronic symptoms or colonic narrowing.D: Crohn disease 