This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'Systemic causes of epistaxis are all except: \nSelect and explain. \nA. Hypeension, B. Anticoagulant treatment, C. Hereditary telangietasia, D. Hemophilia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hemophilia is secondary cause of epistaxis in children. Ref.Scott Brown 7/e,vol 2,p 1605', 'role': 'assistant'}]