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: Psychiatry
[{'content': 'The only definite contraindication to ECT is: \nSelect and explain. \nA. Brain tumour, B. Glaucoma, C. Aoic aneurysm, D. Myocardial disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Brain tumour', 'role': 'assistant'}]