Which of the following represents the sequence of electron flow in the light reactions of
photosynthesis in higher plants?
a. NADPH → photosystem I → photosystem II → O2
b. H2O → photosystem II → photosystem I → ATP
c. H2O → photosystem II → photosystem I → NADP
d. H2O → photosystem I → photosystem II → NADP
e. Photosystem I → photosystem II → NADPH → O2