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: Medicine
[{'content': 'Acute Infective Endocarditis with abscess formation is most commonly associated with \nSelect and explain. \nA. Listeria, B. Staphylococcus, C. Streptococcus, D. Enterococcus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Answer is B (Staphylococcus) Acute Infective Endocarditis with abscess formation is most commonly associated with staphylococcus. `The most common organism causing acute infective endocarditis overall is staphylococcus aureus. Staphylococcus aureus endocarditis is paicularly virulent and associated with annular and myocardial abscess formation and a higher moality'", 'role': 'assistant'}]