This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'In Marfan&;s syndrome which of the following is affected \nSelect and explain. \nA. Collagen, B. Fibrillin, C. Actin, D. Fibronectin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is a connective tissue disorder. Affects fibrillin 1 gene. Clinical features include; Visual difficulties long limbs hea problems etc Refer robbins 145', 'role': 'assistant'}]