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: Pathology
The % of coincidence between a sore throat and acute rheumatic fever is - 
Select and explain. 
A. 3%, B. 5%, C. 7%, D. 9%
A: 3%
Answer: A: 3% 
Explanation: None