Explain the process of glycolysis in cellular respiration.

A. Glycolysis is the process of breaking down pyruvate into glucose, producing ATP and NADH in the nucleus of the cell.

B. Glycolysis is the process of breaking down ATP into glucose, producing pyruvate and NADH in the cytoplasm of the cell.

C. Glycolysis is the process of breaking down water into glucose, producing oxygen and carbon dioxide in the mitochondria of the cell.

D. Glycolysis is the process of breaking down glucose into pyruvate, producing ATP and NADH in the cytoplasm of the cell.