17. Dinitrophenol (DNP) uncouples mitochondrial electron transport from oxidative Phosphorylation by (A) dissipating the proton gradient. (B) inhibiting cytochrome oxidase. (C) dissociating the Fo and F1 units of the ATP synthase complex. (D) binding irreversibly to ubiquinone. (E) blocking the adenine nucleotide carrier (ATP/ADP exchanger).