What Is the Primary Function of Electron Transport and Oxidative

What is the primary function of electron transport and oxidative phosphorylation?

A) to provide electrons for the hydrolysis of ATP
B) to synthesize the reduced coenzymes NADH and FADH₂ that are necessary for digestion
C) to transport electrons and energy from ATP to ADP
D) to oxidize the reduced coenzymes NADH and FADH₂, and provide energy for the synthesis of ATP
E) to oxidize food molecules to acetyl CoA and prepare them for entry into the citric acid cycle