Which statement about photosynthesis is false?

• A
  The electron carriers involved in photophosphorylation are located on the thylakoid membranes.
• B
  Photosynthesis is a redox process,in which water is oxidized and carbon dioxide is reduced.
• C
  The enzymes required for carbon fixation are located only in the grana of chloroplasts.
• D
  In green plants,both $PS-I$ and $PS-II$ are required for the formation of $NADPH + H^+$.