Fill in the blank (_) in the following sentence from the following choices.
Sentence: Brian was not interested in Benjamin since _ did not show a sexual attraction to her.

Choice 1: Brian was not interested in Benjamin since Brian did not show a sexual attraction to her.
Choice 2: Brian was not interested in Benjamin since Benjamin did not show a sexual attraction to her.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.