Electron transport chain oxidative phosphorylation

Which of the following correctly describes the flow of electrons from FADH 2 in the electron transport chain?

1: Complex 1, CoQ, complex 3, cytochrome c, complex 4
2: Complex 2, CoQ, complex 3, cytochrome c, complex 4
3: Complex 3, CoQ, complex 2, cytochrome c, complex 5
4: Complex 2, complex 1, CoQ, complex 3, cytochrome c