With respect to the blood supply of the hearts, which answer is INCORRECT?

• A. the left coronary artery and its branches are the main blood supply to the interventricular septum
• B. the coronary sinus receives the great cardiac vein
• C. anterior cardiac veins drain directly into the right atrium
• D. the sinoatrial nodes is, in a majority of cases, supplied by the left coronary artery
• E. the right coronary artery gives off a marginal branch at the inferior border of the heart