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: Pathology
[{'content': 'Hemophilia: \nSelect and explain. \nA. Affects males and females equally, B. Increased clotting time in all patients, C. Nerve blocks can be given safely, D. Is a congenital disorder', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]