This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Questionnaire is to check toxicity after - 
Select and explain. 
A. Alcohol, B. Nicotine, C. Opium, D. Heroine
A: Alcohol
Answer: A: Alcohol 
Explanation: Questionnaire is to check toxicity after alcohol intake REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION;