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: Surgery
[{'content': 'The blood product of choice for treatment of hemophilics is \nSelect and explain. \nA. Fresh blood, B. Cryoprecipitate, C. Fresh frozen plasma, D. Plasma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]