The chemiosmotic coupling hypothesis of oxidative phosphorylation that adenosine triphosphate (ATP) is formed because
A. A proton gradient forms across the inner membrane
B. There is a change in the permeability of the inner mitochondrial membrane towards adenosine diphosphate (ADP).
C. High energy bonds are formed in mitochondrial proteins
D. ADP is pumped out of the matrix into the inter membrane space.