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': 'Clinical Haemophilia is characterized by ?\n(BT-Bleeding\nTime, CT Clotting Time, PT — Prothrombin time, PTT\nPartial thromboplastin time): \nSelect and explain. \nA. Prolonged PT and normal BT, B. Prolonged BT, PT and PTT, C. Normal BT and PT and prolonged PTT, D. Prolonged BT and normal CT, PT and PTT', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]