Why Is Fatty Acid Catabolism Called β-Oxidation

Multiple Choice

Why is fatty acid catabolism called β-oxidation?

A) because half of the reactions involve oxidation of the third carbon atom in the fatty acid chain
B) because half of the reactions involve oxidation of the second carbon atom in the fatty acid chain
C) because half of the reactions involve oxidation of the first carbon atom in the fatty acid chain
D) because it is the second biochemical pathway in fatty acid catabolism
E) because it is the penultimate pathway in fatty acid catabolism