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: Biochemistry
[{'content': 'The fluid mosaic model of membrane structure was proposed by \nSelect and explain. \nA. Watson and Crick, B. Edward Angle, C. G.V. Black, D. Singer and Nicolson', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]