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: Forensic Medicine
[{'content': 'Which of the following is an example of a polychlorinated hydrocarbons? \nSelect and explain. \nA. Parathion, B. Malathion, C. Diazinion, D. Endrin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Endrin is a chlorinated hydrocarbon belonging to the subgroup of indane derivatives. Parathion, malathion and diazenon are organophosphates. Ref: The Essentials of Forensic Medicine and Toxicology By Dr K S Narayan Reddy, 27th Edition, Page 457', 'role': 'assistant'}]