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': "Brodman's area number for motor area \nSelect and explain. \nA. 4 and 6, B. 1,2,3, C. 5 and 7, D. 16 and 18", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) 4 and 6(Ref: Ganong, 25th ed/p.237)Primary motor cortex Is located in the precentral gyrus of the frontal lobe (Brodmann's area 4)Premotor cortex and supplementary motor cortex - Brodmann's area 6", 'role': 'assistant'}]