Which Statement Best Compares the Reactions of Citrate and Isocitrate

Multiple Choice

Which statement best compares the reactions of citrate and isocitrate in the citric acid cycle?

A) Both citrate and isocitrate are oxidized in the citric acid cycle.
B) Neither citrate nor isocitrate is oxidized in the citric acid cycle.
C) Citrate is oxidized, whereas isocitrate is not oxidized in the citric acid cycle.
D) Isocitrate is oxidized, whereas citrate is not oxidized in the citric acid cycle.