Mutation to ATP synthase?

You have identified a mutation in the c subunit in the ATP synthase. The mutation changes the glutamate residue, (that facilitates proton pumping into the mitochondrial matrix), to a glycine. The inability to dissipate the proton gradient will have which of the following impacts on the electron transport chain?

-decreased ATP synthesis

-increased ATP synthesis

-increased NADH oxidation

-increased oxygen consumption

A answer I found online stated that it would increase ATP synthesis. Can...

Mutation to ATP synthase?