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': "Mutation in Marfan's syndrome g is ? \nSelect and explain. \nA. Fibrillin I, B. Fibrillin II, C. Collagen I, D. Collagen IV", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Fibrillin I", 'role': 'assistant'}]