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: Medicine
For diagnosis of Acute Rheumatic fever, essential is: 
Select and explain. 
A. Prior h/o rheumatic fever, B. Recent sore throat infection, C. 1 major and 2 minor criteria's, D. Erythema marginatum
C: 1 major and 2 minor criteria's
Answer: C: 1 major and 2 minor criteria's 
Explanation: None