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: Pediatrics
Major criteria for diagnosis of rheumatic fever? 
Select and explain. 
A. Erythema migrans, B. Ahralgia, C. Fever, D. Subcutaneous Nodule
D: Subcutaneous Nodule
Answer: D: Subcutaneous Nodule 
Explanation: Ans. is 'd' i.e., Subcutaneous Nodule