This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Colonic divericulosis and diverticulitis maximally seen in: \nSelect and explain. \nA. Sigmoid colon, B. Rectum, C. Transverse colon, D. Ascending colon', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Sigmoid colonRef: Sabiston 20th edition, Page 1333Acquired diverticulum:* Most common site in colon -- sigmoid* Most common site in small intestine -- duodenum', 'role': 'assistant'}]