This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance abuse, Subject name: Psychiatry
[{'content': 'Amotivational syndrome is seen in \nSelect and explain. \nA. Cannabis, B. Cocaine, C. Amphetamine, D. LSD', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amotivational syndrome: Chronic cannabis use is postulated to cause lethargy, apathy, loss of interest, anergia, reduced drive and lack of ambition. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no.46', 'role': 'assistant'}]