Myocardial response to ischemia

In the setting of ischemia, what major change does a cardiac myocyte undergo to cope with lack of oxygen?

1: It switches from anaerobic to aerobic glycolysis
2: It switches from oxidative phosphorylation to fermentation
3: It switches from aerobic glycolysis to anaerobic glycolysis
4: It switches from fermentation to anaerobic glycolysis