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
Microfflaria endemicity index is - 
Select and explain. 
A. % of persons showing MF in blood and diseased individual, B. % of persons showing MF in blood only, C. Number of MF in the blood, D. Average no. persons with positive slides
A: % of persons showing MF in blood and diseased individual
Answer: A: % of persons showing MF in blood and diseased individual 
Explanation: None