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
Drinking water is hest made free of cyclops by 
Select and explain. 
A. Filtration, B. Boiling, C. Chlorination, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: Ans. is d i.e., None of the above "The most satisfactory and permanent method of controlling Cyclops in drinking water is to provide piped water supply or tube wells".