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
Which of the following is a polychlorinated hydrocarbon? 
Select and explain. 
A. Parathion, B. Malathion, C. Diazinon, D. Dieldrin/Endrin
D: Dieldrin/Endrin
Answer: D: Dieldrin/Endrin 
Explanation: Organochlorine insecticides are chlorinated hydrocarbons and are divided into four types as:* DDT (dichlorodiphenyl-trichloroethane) and analogues* Benzene hexachloride group -- e.g. BHC, lindane* Cyclodines and related compounds -- e.g. endrin, aldrin,dieldrin, endosulfan, sobenzan{ polycyclic polychlorinated hydrocarbon}* Toxaphene and related compounds -- e.g. toxaphen Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 24, page-286.