Indicate Whether Each of the Following Molecules Is an Intermediate

Short Answer

Indicate whether each of the following molecules is an intermediate in glycolysis (G) or in the tricarboxylic acid cycle (T). Your answer would be a four-letter string composed of letters G and T only, e.g. GGTT.
( ) Fumarate
( ) Malate
( ) Phosphoenolpyruvate
( ) Succinate