Which of the following congenital lesions of the coronary circulation causes a cardiac murmur that is similar to the murmur produced by a PDA? | Surgery

A. Origin of the left coronary artery from the pulmonary artery.
B. Origin of the right coronary artery from the pulmonary artery.
C. Coronary artery fistula.
D. Membranous obstruction of the ostium of the left main coronary artery.

Ans: C