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: Pathology
[{'content': '"Colon Carcinogenesis" is associated with all except: \nSelect and explain. \nA. APC, B. k RAS, C. B-catenin, D. Mismatch repair', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mismatch repair', 'role': 'assistant'}]