In a scenario where ubiquinone is reduced, what is the significance of the Q cycle in Complex III?

The Q cycle facilitates electron transfer from ubiquinone to cytochrome c, resulting in proton pumping into the intermembrane space.

The Q cycle removes protons from the mitochondrial matrix without electron transfer.

The Q cycle acts as the final electron acceptor, forming water.

The Q cycle directly synthesizes ATP from ADP and inorganic phosphate.