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': "Gardner's syndrome is a rare hereditary disorder involving the colon. It is characterized by \nSelect and explain. \nA. Polyposis colon, cancer thyroid, skin tumors, B. Polyposis in jejunum, pitutary adenoma and skin tumors., C. Polyposis colon, osteomas, epidermal inclusion cysts and fibrous tumors of the skin, D. All", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. 'c' Polyposis colon, osteomas, epidermal inclusion cysts and fibrous tumors of the skin", 'role': 'assistant'}]