This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Most common hea valve involved in IV drug user is \nSelect and explain. \nA. Mitral valve, B. Aoic valve, C. Pulmonary valve, D. Tricuspid Valve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref Harrison 19 th ed pg 819 Almost 50% of endo- carditis associated with injection drug use is limited to the tricuspid valve and presents with fever but with faint or no murmur and no peripheral manifestations', 'role': 'assistant'}]