This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following is designer drug ? 
Select and explain. 
A. Propofol, B. Ketamine, C. Alcohol, D. Disulfiram
B: Ketamine
Answer: B: Ketamine 
Explanation: Ans. is'b'i.e., Ketamine lRef. InternetA designer drug is a structural or functional analog of controlled substance that has been designed to mimic the pharmacological effects of parent drug while avoiding detection or classification as illegal.