Which Pathophysiological Concept Should the Nurse Consider When Developing a Plan

Which pathophysiological concept should the nurse consider when developing a plan of care for a patient with myocardial ischemia?

A) There is a decrease in the amount of oxygen and glucose reaching the myocardium.
B) There is a lack of oxygen reaching the myocardium, but the supply of glucose is adequate.
C) There is a lack of glucose reaching the myocardium, but the supply of oxygen is adequate.
D) There is a complete lack of both oxygen and glucose reaching the myocardium.