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 sensitive indicator of recent transmission of malaria of 
Select and explain. 
A. Infant parasite rate, B. ABER, C. Spleen rate, D. Annual parasite index
A: Infant parasite rate
Answer: A: Infant parasite rate 
Explanation: None