Why Does Acetyl Co-A Occupy a Central Role in Cellular

Why does acetyl Co-A occupy a central role in cellular metabolism?

A) Amino acids,fatty acids and glucose can all be converted to acetyl Co-A.
B) Fatty acids and glucose,but no other compounds,can be converted to acetyl Co-A.
C) Acetyl Co-A is essential to the anabolic process that includes the citric acid cycle.
D) Acetyl Co-A is essential to the catabolic process that includes triglyceride synthesis..