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: Microbiology
Infective endocarditis is common in -a) MRb) Coarctation of aortac) ARd) MSe) TS 
Select and explain. 
A. a, B. bc, C. ad, D. ac
D: ac
Answer: D: ac 
Explanation: Infective Endocarditis is common in AR, AS, MR, VSD and complex congenital heart disease.