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: Physiology
[{'content': 'The setting of posture before a planned movement is believed to be by \nSelect and explain. \nA. Premotor cortex, B. Motor cortex, C. Frontal, D. Supplementary motor cortex', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Premotor cortex is believed to be involved in getting prepared the body for a planned movement, especially the control of proximal limb muscles needed to orient the body for movement.', 'role': 'assistant'}]