How does pyruvate kinase contribute to ATP generation in glycolysis?

• A. Pyruvate kinase catalyzes the conversion of pyruvate to lactate, generating ATP.
• B. Pyruvate kinase catalyzes the conversion of PEP to pyruvate, generating ATP through substrate-level phosphorylation.
• C. Pyruvate kinase is involved in the conversion of fructose-1,6-bisphosphate to glyceraldehyde-3-phosphate.
• D. Pyruvate kinase converts glucose to glucose-6-phosphate, generating ATP.

Answer: (B)