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': 'Brodmann&;s area number for motor area \nSelect and explain. \nA. 4 & 6, B. 1, 2, 3, C. 5 & 7, D. 16 & 18', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The cerebral hemisphere is divided into several areas, called Brodmann Areas. Each cerebral hemisphere contains a total of &;47&; such areas. The area between central sulcus and precentral sulcus is called pre-central gyrus; the motor area of the brain (Brodmann area 4).Ref: Textbook of physiology, Dir. Prof. AK Jain, 5th edition', 'role': 'assistant'}]