This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Predisposing factors for colon ca are -a) Animal fat consumptionb) Familial adenomatous polyposisc) Ulcerative colitisd) Crohn' s diseasee) TB \nSelect and explain. \nA. abce, B. abcd, C. acde, D. abde", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]