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': 'All of the following are autosomal dominant disorders except - \nSelect and explain. \nA. Tuberous sclerosis, B. Polyposis coli, C. Cystic fibrosis, D. Myotonic dystrophy', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Cystic fibrosis", 'role': 'assistant'}]