This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
[{'content': 'The maximum motility of the colon is seen in \nSelect and explain. \nA. Ascending colon, B. Transverse colon, C. Descending colon, D. Sigmoid colon', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The maximum motility of the colon is seen in the sigmoid colon. The rate of BER at sigmoid colon is 6/min. Rate of basal electric rhythm in various regions Segment Rate of BER Stomach 4/min Duodenum 12/min Distal ileum 8/min Cecum 2/min Sigmoid 6/min Ref: Ganong&;s Review of medical physiology 26th edition Pgno: 486', 'role': 'assistant'}]