This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 2, Subject name: Forensic Medicine
[{'content': 'All are Aryl phosphate group of Organophosphorus compounds except: \nSelect and explain. \nA. Follidol, B. Malathion, C. Diazinon, D. Parathion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Alkyl phosphates : HETP, TEPP, OMPA, isopestox ,Malathion , Sulfotepp , Trichlorfon Aryl phosphates : Parathion , Methyl parathion , Chlohion , Paraoxon, Diazinon', 'role': 'assistant'}]