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: Psychiatry
[{'content': 'A young city dweller presented with history of drug abuse and complaining of change in perception, like hearing sights and seeing sounds. Substance responsible for this: AI 12 \nSelect and explain. \nA. LSD, B. Phencyclidine, C. Cocaine, D. Amphetamine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. LSD', 'role': 'assistant'}]