Consider the Following Reaction Sequence

Consider the following reaction sequence.
-Which of the following is true of pathways by which energy is extracted from carbohydrates and glycerol?

A) They are both glycolysis pathways, but are different from one another.
B) They are the same as one another.
C) The pathway for carbohydrates does not involve glycolysis, but that for glycerol does.
D) The pathway for glycerol does not involve glycolysis, but that for carbohydrates does.