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: Social & Preventive Medicine
Which one of the following insecticides is commonly used for ultra low volume fogging - 
Select and explain. 
A. Abate, B. DDT, C. Paris green, D. Malathion
D: Malathion
Answer: D: Malathion 
Explanation: Ans. is 'd' i.e., Malathion o New equipment has been developed to use residual insecticide as space spray by ultra low volume (ULV technique. o Malathions and fenthion are most commonly used.