The red blood cells require ATP in order to maintain ion gradients across their membrane. In the absence of these ion gradients, the red blood cells will swell and burst, bringing about a hemolytic anemia. Red cells generate their energy via which one of the following?
选项：

A: Oxidative phosphorylation
B: Oxidation of glucose to CO2 and H2O
C: Substrate-level phosphorylation
D: TCA cycle
E: Electron transfer to oxygen