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
[{'content': 'Which of the following is designer drug ? \nSelect and explain. \nA. Propofol, B. Ketamine, C. Alcohol, D. Disulfiram', 'role': 'user'}, {'content': "Answer: B \nExplanation: 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.", 'role': 'assistant'}]