This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'Motor area of Bradman is area \nSelect and explain. \nA. 1, B. 4, C. 5, D. 7', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) 4', 'role': 'assistant'}]