The posterior interventricular artery. Which of the following veins is most likely to be ruptured?

A 19-year-old man came to the emergency department, and his angiogram exhibited that he was bleeding from the vein that is accompanied by the posterior interventricular artery. Which of the following veins is most likely to be ruptured?
(A) Great cardiac vein
(B) Middle cardiac vein
© Anterior cardiac vein
(D) Small cardiac vein
(E) Oblique veins of the left atrium

The answer is B. The middle cardiac vein ascends in the posterior interventricular groove, accompanied by the posterior interventricular branch of the right coronary artery. The great cardiac vein is accompanied by the anterior interventricular artery, the anterior cardiac
vein drains directly into the right atrium, and the small cardiac vein is accompanied by the marginal artery.