Which of the following is incorect about the light reactions of photosynthesis?
(1) P680 and P700 are the reaction centres of PS-I, and PS-II respectively
(2) Light energy provides energy for the photolysis of water through excitation of the reaction centre of PS-II
(3) NADPH is not produced in cyclic electrons transport in light reactions
(4) Reactions of the two photosystems are needed for the reduction of NADP