This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Angel dust is - 
Select and explain. 
A. Phencyclidine, B. LSD, C. Morphine, D. Cannibis
A: Phencyclidine
Answer: A: Phencyclidine 
Explanation: Phencyclidine (PCP), a phenylcyclohexylamine compound, is easily synthesised from piperazine, cyclohexanone, and potassium cyanide. It is commonly referred to by addicts as "angel dust" or "PCP" Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 30, page-332.