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': 'Liver transplantation was first done by - \nSelect and explain. \nA. Starzl, B. Huggins, C. Carrel, D. Christian Benard', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The first human liver transplant was performed in 1963 by Dr. Thomas Starzl.', 'role': 'assistant'}]