The conversion of glucose-1-phosphate to UDP-glucose has a ΔG0' near zero. Which of the following reactions is coupled with the above reaction to drive it to completion?
A) Hydrolysis of PPi
B) Hydrolysis of ATP
C) Hydrolysis of ADP
D) Hydrolysis of UDP
E) Hydrolysis of UTP
Answer: A) Hydrolysis of PPi