Use the Following Information to Answer the Next Questions

Multiple Choice

Use the following information to answer the next questions.
In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. First, however, the pyruvate 1) loses a carbon, which is given off as a molecule of CO₂, 2) is oxidized to form a two-carbon compound called acetate, and 3) is bonded to coenzyme A.
-How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate?

A) 2
B) 4
C) 6
D) 8
E) 10