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: Unknown
Not included in modified Jones criteria- 
Select and explain. 
A. Prolonged QRS interval, B. Carditis, C. Chorea, D. Erythema marginatum
A: Prolonged QRS interval
Answer: A: Prolonged QRS interval 
Explanation: None