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
[{'content': 'Which of the following hallucinogen is considered as angel dust? \nSelect and explain. \nA. LSD, B. Phencyclidine, C. Heroin, D. Mescaline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: PCP works primarily as an NMDA receptor antagonist Sma name for phencyclidine is angel dust which is a hallucinogen Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 330-336', 'role': 'assistant'}]