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
In endemic area, most sensitive indicator of recent transmission of malaria is 
Select and explain. 
A. Infant parasite site, B. Spleen rate, C. ABER, D. API
A: Infant parasite site
Answer: A: Infant parasite site 
Explanation: None