This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': 'Pontine hemorrhage most common cause is \nSelect and explain. \nA. Hypeension, B. Diabetes, C. Trauma, D. Aneurysmal rupture', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pontine haemorrhage, a form of Ref Harrison20th edition pg 2456', 'role': 'assistant'}]