This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cerebrovascular, Subject name: Medicine
[{'content': 'Cerebral angiography was performed by - \nSelect and explain. \nA. Sir Walter Dandy, B. George Moore, C. Seldinger, D. Egas Moniz', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Egas Moniz o Egas Moniz first performed cerebral Aneioeraphy in 192 7,# He received the Nobel Prize for developing for developing frontal leucotomy as a treatment for psychiatric diseases.", 'role': 'assistant'}]