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: Medicine
[{'content': 'What is best replacement for factor VIII in hemophilia A? \nSelect and explain. \nA. FFP, B. Cryoprecipitate, C. Whole blood, D. Factor VIII', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]