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
Method of Substance use shown in Figure is mainly used for 
Select and explain. 
A. Ganja, B. Bhang, C. Charas, D. Cocaine
D: Cocaine
Answer: D: Cocaine 
Explanation: Cocaine (Method shown: Snorting)