Photosynthetic Phosphorylation and Oxidative Phosphorylation Are Similar Processes

Photosynthetic phosphorylation and oxidative phosphorylation are similar processes.Which of the following is common to both processes?

A) Both produce NADPH to be used in the reductive pentose phosphate pathway (Calvin cycle) .
B) Both contain cytochromes in their electron carrier chains.
C) Both represent a major route of ATP hydrolysis.
D) Both have iron clusters as electron carriers.