Consider the pathway A ? B ? C ? D ? E. Reactions A ? B, B ? C, and D ? E have a ?G near equilibrium, while C ? D has a ?G << 0. Which of the following is true about this pathway if it were operating within a cell?

A. Adding more B to the system will increase the amount of C only and will have no effect on the amount of A.
B. Adding more A to the system will increase the amount of B and C in the system.
C. Adding more C to the system will increase the amount of D only and will have no effect on A or B.
D. Adding more E to the system will increase the amount of C.