Sequence the Following Events as They Occur at the Electron

Multiple Choice

Sequence the following events as they occur at the electron transport chain. I. Protons accumulate on one side of the membrane to form a proton motive force.
II) The coenzymes NADH and FADH₂ drop off electrons to the carriers in the respiratory chain.
III) Protons flow through ATP synthase which captures the energy of the flowing protons and uses it to recharge ATP.
IV) Electrons moving through the chain release energy to pump proteins across the membrane where the carrier proteins are found.

A) I - III - IV - II
B) I - II - III - IV
C) III - II - IV - I
D) II - IV - I - III
E) II - I - IV - III