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
Commonest complication of prosthetic valve is - 
Select and explain. 
A. Embolism, B. Subacute bacterial endocarditis, C. Rejection, D. Infarction
A: Embolism
Answer: A: Embolism 
Explanation: None