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
Amotivational syndrome is seen in 
Select and explain. 
A. Cannabis, B. Cocaine, C. Amphetamine, D. LSD
A: Cannabis
Answer: A: Cannabis 
Explanation: 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