38. In the process of photosynthesis, which of the following is not involved in the creation of H+
gradient thylakoid lumen
and stroma that generates ATP?
(A) reduction of NADP+
(B) splitting of water in the thylakoid lumen
(C) PQ cycle of the electron transport chain and its reaction to cytochrome b6f complex
(D) regeneration of RuBP
(E) electron transport