Which of the Following Is NOT TRUE Concerning Photosystem I

Multiple Choice

Which of the following is NOT TRUE concerning photosystem I?

A) It can run independently as a cyclic pathway.
B) It runs as a cyclic pathway when too much NADPH is produced.
C) Electrons from p700 return to p680 when it runs as a cyclic pathway.
D) When it runs as a cyclic pathway, neither NADP⁺ nor O₂ is formed.
E) Its energized electrons are used to build a high H⁺ concentration.