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
Reumatic activity involves mostly valves- 
Select and explain. 
A. Aortic & tricuspid, B. Aortic & pulmonary, C. Mitral & tricuspid, D. Mitral & aortic
D: Mitral & aortic
Answer: D: Mitral & aortic 
Explanation: None