What is the function of NAD+, NADP+ and FAD?

I- To store energy in the bonds between phosphorus atoms.
II- To transport electrons and protons from one place to another.
III- To carry amino acids to the ribosomes for protein synthesis.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I and II are correct.
e) II is correct.