A. FMNH2(Fe-S)→CoQ→Cyt(b→c1→c→a→a3)→1/2O2 B. FMNH2→CoQ→Cyt(b→c1→c→a→a3)→1/2O2 C. FADH2→CoQ→Cyt(b→c1→c→a→a3)→1/2O2 D. FADH2→NAD+→CoQ→Cyt(b→c1→c→a→a3)→1/2O2 E. FADH2→CoQ→Cyt(b→c→c1→a→a3)→1/2O2