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
Commonest complication of prosthetic valve is: 
Select and explain. 
A. Embolism, B. Sub acute bacterial endocarditis, C. Rejection, D. Infarction
B: Sub acute bacterial endocarditis
Answer: B: Sub acute bacterial endocarditis 
Explanation: Ans: b