Which of the following experimental results does not support Mitchell\'s chemiosmosis theory?

• A. Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis
• B. Electron transport in isolated mitochondria was shown to result in acidification of the medium
• C. An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport
• D. Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium