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
Most dicient larval control method ent transmission of urban malaria: 
Select and explain. 
A. Covering overhead tanks, B. Cleaning of drains, C. Filling of ditches and cesspools, D. Uprooting of plants
B: Cleaning of drains
Answer: B: Cleaning of drains 
Explanation: Ans. b. Cleaning of drains