Fill in the blank (_) in the following sentence from the following choices.
Sentence: The glow of the lamp lit up the room but left the closet dark, as the _ was open to its light.

Choice 1: The glow of the lamp lit up the room but left the closet dark, as the room was open to its light.
Choice 2: The glow of the lamp lit up the room but left the closet dark, as the closet was open to its light.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2.