Why Is Photorespiration More of a Problem for a Plant

Multiple Choice

Why is photorespiration more of a problem for a plant when their stomata are closed?

A) Oxygen cannot enter the leaf, blocking normal respiration, so the plants switch to photorespiration.
B) Oxygen, from water in photosystem I, can't leave the leaf, and competes with carbon dioxide for rubisco's active site.
C) Water is lost when the stomata are open, and is not available to accept electrons from Photosystem I.
D) Carbon dioxide levels increase from the light reactions, and compete with oxygen for rubisco's active site.