<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 37-year-old man presents to a clinic with complaints of breathlessness and fever for the past few days. He says that the breathlessness is the same throughout the day and is not related to exertion. He recorded his body temperature at home as 38.1C 100.5F. Past medical history is insignificant. He denies visiting any sick person recently. He admits that he uses marijuana frequently and illicit intravenous drugs intermittently. His vital signs include: blood pressure 12060 mm Hg, temperature 38.3C 101.0F, respiratory rate 16min, and pulse rate 65min regular. Physical examination reveals track marks on the arms and a lesion on the patients left ring finger as shown in the picture below. On cardiac auscultation, an early diastolic murmur over the right second intercostal space is heard; S3 and S4 are also present. Echocardiography shows vegetation on the aortic valve and mild valve insufficiency. Serial blood cultures are performed, and results are pending. Which of the following causative agents is most likely responsible for this patients condition?? A: Viridans group streptococci, B: Kingella kingae, C: Streptococcus gallolyticus, D: Noninfectious immune complex mediated, E: Staphylococcus aureus,  <response>: This is a clinical vignette describing a 37-year-old man with fever, breathlessness, a heart murmur, and a skin lesion suggestive of endocarditis. The key findings are:- Fever and breathlessness - suggests an infectious process- Heart murmur and echocardiographic findings of valvular vegetation - indicate endocarditis- History of IV drug use - major risk factor for endocarditis - Skin lesion on finger - Janeway lesion suggests endocarditisBased on the clinical presentation, the most likely cause is bacterial endocarditis. The patients IV drug use predisposes him to this. The choices describe various bacterial organisms that can cause endocarditis. We need to identify the one most commonly associated with IV drug use.E: Staphylococcus aureus 