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: Pathology
[{'content': 'Which of these statements is FALSE about infective endocarditis in I.V. drug abusers- \nSelect and explain. \nA. Candida is a common cause., B. Pulmonary valve is commonly involved, C. Staphylococcus aureus is commonest organism, D. Tricuspid valve is most commonly involved', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Infective endocarditis in I.V. drug abusers usually involves the right side of the heart.\nThe tricuspid valve is most commonly involved.\nThe pulmonary valve is involved in fewer cases only.\nThe most common organism causing endocarditis in I.V. drug abusers is =>staphylococcus aureus.\nOther common organisms are :\nCandida\nEnterococcus fetalis\nPseudomonas\nSerratia marcescens', 'role': 'assistant'}]