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
[{'content': 'Most common infection in patients with prosthetic valves is- \nSelect and explain. \nA. Pneumococcus, B. Pseudomonas, C. Staphylococcus, D. Enterococci', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most common infection in patients with prosthetic valves is infective endocarditis by staphylococcus Ref Davidson 23rd edition pg 450', 'role': 'assistant'}]