On a Routine Physical Exam Visit, the Physician Mentions That

On a routine physical exam visit, the physician mentions that he hears a new murmur. The patient gets worried and asks, "What does this mean?" The physician responds,

A) "It would be caused by stress. Let's keep our eye on it and see if it goes away with your next visit."
B) "This could be caused by an infection. Have you been feeling well the past few weeks?"
C) "One of your heart valves is not opening properly. We need to do an echocardiogram to see which valve is having problem."
D) "This may make you a little more fatigued than usual. Let me know if you start getting dizzy or light-headed."