The Light Reactions of Photosynthesis Are Said to Be Similar $\rarr$

The light reactions of photosynthesis are said to be similar to a battery because they form a current.In which direction do the electrons of this circuit flow?

A) H₂O $\rarr$ PSII $\rarr$ electron transport chain $\rarr$ PSI $\rarr$ electron transport chain $\rarr$ NADPH
B) H₂O $\rarr$ PSII $\rarr$ chlorophyll b $\rarr$ PSI $\rarr$ chlorophyll a $\rarr$ NADPH
C) NADPH $\rarr$ PSII $\rarr$ electron transport chain $\rarr$ PSI $\rarr$ electron transport chain $\rarr$ NADP⁺
D) NADP⁺ $\rarr$ PSII $\rarr$ electron transport chain $\rarr$ PSI $\rarr$ electron transport chain $\rarr$ NADPH
E) PSI $\rarr$ electron transport chain $\rarr$ PSII $\rarr$ electron transport chain $\rarr$ NADPH