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
Valve usually not involved in rheumatic fever - 
Select and explain. 
A. Mitral, B. Aortic, C. Pulmonary, D. Tricuspid
C: Pulmonary
Answer: C: Pulmonary 
Explanation: Endocarditis in rheumatic fever
1. Mitral valve involved almost all the cases of Acute Rheumatic Fever.
2. Almost 25% of MR is associated with aortic regurgitation.
3. Tricuspid regurgitation is seen in 10-30% cases.
4. Pulmonary valve involvement is never seen.