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': 'A young female presents with verrucous vegetations on the surface of mitral valve cusps. The most likely diagnosis is: \nSelect and explain. \nA. Rheumatic Fever, B. Marantic Endocarditis, C. Libman Sacks Endocarditis, D. Infective Endocarditis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer is C (Libman Sacks Endocarditis) Verrucous vegetations on the surface of mitral valve cusps are typical of Libman-Sacks Endocarditis. Libman Sacks Endocarditis is also known as Atypical Verrucous endocarditis (Dorland's) Verrucous (wa like) vegetations are typically seen in Rheumatic Fever and Libman-Sacks Endocarditis. In rheumatic fever these are typically located along the lines of closure while in Libman-Sacks endocarditis they are usually located on the surface of cusps (commonly under-surface).", 'role': 'assistant'}]