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': 'Traumatic epistaxis is not a cause in \nSelect and explain. \nA. Anterior epistaxis, B. Posterior epistaxis, C. Childhood, D. Adulthood', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Trauma is not a course for posterior epistaxis. It can occur spontaneously, often due to hypeension or aeriosclerosis. Mostly seen after the age of 40 years Ref: Dhingra 7e pg 199.', 'role': 'assistant'}]