Fill in the blank (_) in the following sentence from the following choices.
Sentence: The temperature in the bedroom was hotter than in the kitchen, so the _ is likely up higher, since heat rises.

Choice 1: The temperature in the bedroom was hotter than in the kitchen, so the bedroom is likely up higher, since heat rises.
Choice 2: The temperature in the bedroom was hotter than in the kitchen, so the kitchen is likely up higher, since heat rises.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1. The temperature in the bedroom was hotter than in the kitchen, so the bedroom is likely up higher, since heat rises.