Place the following in the order that they would be encountered as you move from the inside of a heart chamber toward the thoracic cavity:
A. Endocardium, myocardium, epicardium, pericardium
B. Epicardium, myocardium, endocardium, pericardium
C. Pericardium, myocardium, endocardium, epicardium
D. Endocardium, epicardium, myocardium, pericardium