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': 'Which of the following is the first line of defense in coagulopathic hemorrhage? \nSelect and explain. \nA. Packed red cells, B. Fresh frozen plasma, C. Cryoprecipitate, D. Platelets', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fresh-frozen plasma (FFP) is rich in coagulation factors; it is removed from fresh blood and stored at –40 to –50 deg C with a 2 year shelf-life. It is the first-line therapy in the treatment of coagulopathic hemorrhage.', 'role': 'assistant'}]