What Is the Primary Function of the Citric Acid Cycle

What is the primary function of the citric acid cycle in metabolism?

A) to break down food molecules into smaller components so they can be absorbed by the blood
B) to synthesize ATP from the energy produced in the hydrolysis of citric acid
C) to provide the enzymes necessary to aid in the hydrolysis of carbohydrates, proteins, and lipids
D) to convert acetyl groups to CO₂ molecules and provide reduced coenzymes for the electron transport chain