This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
Sterile vegetations are seen in all except 
Select and explain. 
A. SLE, B. Infective endocarditis, C. Rheumatic fever, D. Marantic endocarditis
B: Infective endocarditis
Answer: B: Infective endocarditis 
Explanation: Infective endocarditis is a serious infection mandating prompt diagnosis and intervention. Microbial invasion of hea valves or mural endocardium--often with destruction of the underlying cardiac tissues--characteristically results in bulky, friable vegetations composed of necrotic debris, thrombus, and organisms.destruction of the underlying cardiac tissues--characteristically results in bulky, friable vegetations composed of necrotic debris, thrombus, and organisms. (Robbins Basic Pathology,9th edition,pg no.393)