Select the option that correctly fills the blanks in the following statements.
A. Glucose has `ul((i))` carbon atoms, pyruvic acid has `ul((ii))` carbon atoms and the acetyl group has `ul((iii))`carbon atoms.
B. Electrons enter the electron transport system as parts of hydrogen atoms attached to `ul((i))` and `ul((ii))`.
A. `{:(" "A," "B),((i)-6(ii)-4(iii)-3,(i)-NADH(ii)-FADH_(2)):}`
B. `{:(" "A," "B),((i)-6(ii)-3(iii)-2,(i)-NADH(ii)-FADH_(2)):}`
C. `{:(" "A," "B),((i)-6(ii)-3(iii)-2,(i)-ATP (ii)-GTP):}`
D. `{:(" "A," "B),((i)-6(ii)-4(iii)-3,(i)-ATP(ii)-GTP):}`
