In the eukaryotic cells, which of the following is the correct pathway in which energy is converted in the light reactions?
(1) proton (H+) concentration gradient across the thylakoid membrane
(2) electrons with high potential energy
(3) ATP
(4) photons of light
4-2-1-3
4-3-1-2
4-1-2-3
2-4-1-3
