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
Paranoid delusions are associated with use of: 
Select and explain. 
A. Cocaine, B. Heroine, C. Cannabis, D. GHB
A: Cocaine
Answer: A: Cocaine 
Explanation: Paranoid Delusions are fixed beliefs that seem real to you, even when there's strong evidence they aren't. Paranoid delusions, also called delusions of persecution, reflect profound fear and anxiety along with the loss of the ability to tell what's real and what's not real.