Electrons from Water Are Transported Through the Photosystems and Photosynthetic

Multiple Choice

Electrons from water are transported through the photosystems and photosynthetic electron transport chain and are ultimately used to reduce NADP⁺ to NADPH. At what point do the electrons have the greatest amount of potential energy?

A) When they are associated with water.
B) When they are associated with photosystem II.
C) When they are associated with photosystem I.
D) When they are associated with NADPH.