Select the TRUE Statement About the Proton Motive Force

Select the TRUE statement about the proton motive force.

A) The proton motive force always involves the inner mitochondrial membrane.
B) The proton motive force involves a pH gradient component.
C) The proton motive force can be used for active transport processes.
D) The proton motive force involves movement of hydrogen ions across the nuclear membrane by the electron transport chain.
E) The proton motive force involves a pH gradient component AND the proton motive force can be used for active transport processes.