A 46-Year-Old Man Comes to the Office for an Annual

A 46-year-old man comes to the office for an annual examination.  He has an uncomfortable heartbeat sensation at night that he tries to decrease by sleeping on his right side.  The patient has had mild shortness of breath with exertion over the last 6 months, but he has no chest pain.  He was told during a wellness check approximately 2 years ago that he had a heart murmur.  The patient has no other medical problems.  Physical examination reveals bounding femoral pulses and carotid pulsations that are accompanied by head bobbing.  Which of the following is the most likely diagnosis?

A) Aortic regurgitation
B) Aortic stenosis
C) Atrial septal defect
D) Coarctation of the aorta
E) Mitral regurgitation
F) Mitral stenosis
G) Pulmonary stenosis
H) Tricuspid regurgitation