Which of the following statements about fatty acid synthesis is true?
a) The second step of fatty acid synthesis uses FADH₂ to reduce the C=C double bond.
b) The condensation reaction in fatty acid synthesis occurs only in the very first round of the synthesis, not in subsequent rounds.
c) The third step of fatty acid synthesis is a hydration step that adds a water molecule across a double bond.
d) The fourth step in fatty acid synthesis uses NADPH to reduce a C=C double bond, forming a saturated acyl molecule attached to the ACP.
e) All of these are true.