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
Which of the following hallucinogen is considered as angel dust? 
Select and explain. 
A. LSD, B. Phencyclidine, C. Heroin, D. Mescaline
B: Phencyclidine
Answer: B: Phencyclidine 
Explanation: 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