Identify the two main coronary arteries and the associated structures they supply.
a) Pulmonary trunk; left atrium; right coronary; marginal; left ventricle; septum
b) Aorta; pulmonary trunk; left anterior descending; circumflex; right atrium; right ventricle
c) Aorta; left atrium; left main; circumflex; left ventricle; septum
d) Pulmonary trunk; aorta; left anterior descending; marginal; right ventricle; atrium