This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Hyper coagulability due to defective factor v gene is called \nSelect and explain. \nA. Lisbon mutation, B. Leiden mutation, C. Antiphoshpolipid syndrome, D. Inducible thrombocytopenia syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref Robbins 8/p131,8/e p 122 ,9/e p123', 'role': 'assistant'}]