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
Drugs which cause both physical and psychological dependence are 
Select and explain. 
A. Morphine, B. Alcohol, C. Nicotine, D. All the above
D: All the above
Answer: D: All the above 
Explanation: All the above-mentioned drugs produce both physical and psychological dependence in varying degrees Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 326