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 is? \nSelect and explain. \nA. Collagen I, B. Fibrillin I, C. Collagen II, D. Fibrillin II', 'role': 'user'}, {'content': "Answer: B \nExplanation: Mutations in the fibrillin-1 gene cause Marfan’s syndrome\nMutations in the fibrillin-2 gene have been linked to Beal's Syndrome,", 'role': 'assistant'}]