This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Large intestine, Subject name: Surgery
[{'content': 'All of the following genes may be involved in development of carcinoma of colon except: \nSelect and explain. \nA. APC, B. Beta-Catenin, C. K-ras, D. Mismatch repair genes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Gene Mutations that Cause Colon Cancer Mutation type Genes Involved Germline APC and MMR Somatic Oncogenes: Myc, Ras, Src, erbB2 Tumor suppressor genes: p53, DCC, APC MMR genes : bMSH2, bMLH1, bPMS1, bPMS2, bMSH6, bMSH3 Genetic polymorphism APC', 'role': 'assistant'}]