CAM Photosynthesis Limits CO ₂ Fixation to Nighttime Hours in Order

CAM photosynthesis limits CO ₂ fixation to nighttime hours in order to

A) allow water to enter leaf spaces during the daylight hours.
B) open stomata only at night, limiting water loss because of heat and low humidity.
C) allow NADPH and ATP to enter leaf spaces.
D) limit the Calvin cycle reactions to nighttime only.
E) limit water uptake from the soil during daytime hours.