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
Organophosphorus insecticides are all, except: MP 11 
Select and explain. 
A. Chlorpyriphos, B. Gardona (tetrachlorvinphos), C. Dimethoate, D. Diethyltoluamide (DEET)
D: Diethyltoluamide (DEET)
Answer: D: Diethyltoluamide (DEET) 
Explanation: Ans. Diethyltoluamide (DEET)