Fill in the blank (_) in the following sentence from the following choices.
Sentence: Brian stayed much hotter than Nelson when they went outside because _ was wearing jeans.

Choice 1: Brian stayed much hotter than Nelson when they went outside because Brian was wearing jeans.
Choice 2: Brian stayed much hotter than Nelson when they went outside because Nelson was wearing jeans.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2. is incorrect. The sentence should be "Brian stayed much hotter than Nelson when they went outside because Nelson was wearing jeans."