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: Pharmacology
[{'content': 'Which one of the following agents / drugs is of no value in the post operative care of the hemophilic patient? \nSelect and explain. \nA. Tranexamic acid, B. Clopidogrel, C. Aminocaproic Acid, D. Factor VIII Cryoprecipitate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]