This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Drugs & Other Biological Methods of Treatment, Subject name: Psychiatry
[{'content': 'The clinical effects of the antidepressant drugs is mainly based on - \nSelect and explain. \nA. Change in neurotransmitter receptor sensitivity, B. Decreased level of neurotransmitters, C. Change in efficacy of neurotransmitters, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Change in neurotransmitter receptor sensitivity", 'role': 'assistant'}]