This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance Related and Addictive Disorders, Subject name: Psychiatry
Which of the following drug is a common and classical example producing reverse tolerance? 
Select and explain. 
A. LSD, B. Cannabis, C. Alcohol, D. Nicotine
C: Alcohol
Answer: C: Alcohol 
Explanation: Reverse tolerance is seen with alcohol. Reverse tolerance is also called sensitization or hypersensitization. It involves the exaggerated effect of taking in a small amount of substance, in genetically susceptible individuals.