A potted geranium sits on the windowsill of your dorm room, absorbing sunlight. After you put the plant in your dark closet for a few days (but keep it watered as needed) will it weight more or less (discounting the weight of the water) than before you put it in the closet?

A. It will weigh less because it is still respiring.
B. It will weigh the same because the Calvin cycle continues.
C. It will weigh the same because no carbon is being fixed.
D. It will weigh less because it can no longer respire.