This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Opioid-Related Disorders, Subject name: Psychiatry
Di-acetyl morphine is - 
Select and explain. 
A. Bhang, B. Ganja, C. Heroin, D. Hashih
C: Heroin
Answer: C: Heroin 
Explanation: Ans. is 'c' i.e. Heroin o Di-acetyl morphine is the chemical name of heroino Heroin (smack) is the most commonly abused opioid.o Bhang, Ganja and hashish (charas) are preparation of cannabis or marinjuana.