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
[{'content': 'Which one of the following insecticides is commonly used for ultra low volume fogging – \nSelect and explain. \nA. Abate, B. DDT, C. Paris green, D. Malathion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]