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
Not a inset repellent 
Select and explain. 
A. Allethrin, B. Neem oil, C. Garlic, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: None