This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All develop from endodermal cloaca except \nSelect and explain. \nA. Rectum, B. Anal canal, C. Sigmoid colon, D. Primitive urogenital sinus', 'role': 'user'}, {'content': "Answer: C \nExplanation: Sigmoid colon develop from the hindgut Ref: Gray's 39e/p-1289", 'role': 'assistant'}]