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': 'Posterior epistaxis is commonly seen in \nSelect and explain. \nA. Children with ethmoidal polyps, B. Foreign body of the nose, C. Hypeension, D. Nose picking', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Posterior epistaxis is commonly seen in elderly hypeensive patients. Often due to aeriosclerosis, rarely spontaneously Ref: Dhingra 7e pg 199.', 'role': 'assistant'}]