Are My Answer Right Or Not???????????/?

At the end of glycolysis, the original carbons of the glucose molecule form:
a. six molecules of carbon dioxide.
b. two molecules of NADH.
c. two molecules of pyruvic acid.
d. two molecules of citric acid.
e. two molecules of fructose.
answer is C
You are playing a long tennis match and your muscles begin to switch to anaerobic respiration. Which of the following is NOT a bad consequence?
a. Your cells convert NADH to NAD+.
b. Lactic acid is produced.
c. ATP production declines.
d. Oxygen debt increases.
e. All of these ARE problems.
ANSWER IS B
What is the significance of the conversion of pyruvic acid to lactic acid during fermentation?
a. Pyruvic acid becomes available to enter matrix reactions.
b. The citric acid cycle is initiated.
c. NAD+ is regenerated for use in glycolysis.
d. The oxidation of pyruvic acid becomes possible.
e. ATP is produced.
ANSWER IS C