How does PEP carboxykinase utilize GTP in the conversion of oxaloacetate to PEP?

• A. PEP carboxykinase uses GTP to phosphorylate glucose.
• B. PEP carboxykinase uses GTP to remove CO2 and add a phosphate group to oxaloacetate.
• C. PEP carboxykinase uses GTP to add CO2 to oxaloacetate.
• D. PEP carboxykinase uses GTP to convert oxaloacetate directly to glucose.

Answer: (B)