This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Medicine
Which cardiac valves have been replaced? 
Select and explain. 
A. Aortic and mitral valves, B. Aortic and tricuspid valves, C. Mitral and tricuspid valves, D. Pulmonary and mitral valves
A: Aortic and mitral valves
Answer: A: Aortic and mitral valves 
Explanation: Answer A. Aortic and mitral valvesThis patient had her mitral and aortic valves replaced with Starr-Edwards devices for severe rheumatic aortic and mitral stenosis.