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: Surgery
[{'content': 'Lowest incidence of cerebral tumours is seen in ? \nSelect and explain. \nA. Occipital, B. Frontal, C. Temporal, D. Parietal', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Occipital", 'role': 'assistant'}]