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: Social & Preventive Medicine
[{'content': "Which one of the following is not source of manager's power – \nSelect and explain. \nA. Reward, B. Coercive, C. Legitimate, D. Efferent", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Management power \n\nPower is the ability to influence people.\nManagement power is, how a manager can make his subordinates do what he wants them to do.\nManager can use following types of power to do so : -\n\n\nReward power → Reward based\nCoercive power → Fear based\nLegitimate power → Position based\nExpert power\xa0→ Knowledge based\nReverent power → Personality based', 'role': 'assistant'}]