NBME 12 Block 2 Q30 (spoiler)

If what I'm asking may sound dumb, I'm sorry, I don't intend on wasting anyone's precious time, but does this make sense to anyone?In the Q they say patient is hospitalized for IE for 3 days and then gets shortness of breath once he starts walking. Explanation says it's due to valve damage cz new murmurs, but what murmur really? diastolic murmur at apex left sternal border so mitral stenosis and tricuspid stenosis in 3 days? Or systolic murmur at carotids and at the left sternal border, aortic stenosis in 3 days? Not to mention that he was also being treated for the IE. Wouldn't PE make more sense since he since he was bed-bound for 3 days, HR is 100+, high RR, and crackles?

Three days after admission to the hospital for acute bacterial endocarditis, a 62-year-old man has shortness of breath that began 5 minutes ago while walking for the first time since admission. On admission, he had a 10-day history of fever; examination showed splinter hemorrhages and normal heart sounds without murmurs. His current pulse is 110/min, respirations are 24/min, and blood pressure is 100/50 mm Hg. Crackles are heard over both lung bases. S1,and S2,are soft; there is an S3 A new grade 2/6, early diastolic murmur is heard at the apex and the left sternal border, and a grade 4/6, systolic ejection murmur is heard best in the carotids and at the left sternal border. Which of the following is the most appropriate next step in management?

A) Echocardiography B) Ventilation-perfusion lung scans C) Intravenous furosemide therapy D) Intravenous heparin therapy E) Sublingual nitroglycerin therapy