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
All the following are criteria to say substance dependence except 
Select and explain. 
A. Tolerance, B. Withdrawal symptoms, C. Unable to quit the drug, D. Use of illegal substances
D: Use of illegal substances
Answer: D: Use of illegal substances 
Explanation: Usage of illegal drugs doesn't come under substance dependence as per WHO definition. Remaining 3 options make up the definition Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 326