Fill in the blank (_) in the following sentence from the following choices.
Sentence: Elena was trying to acquire new skills with the help of Rachel but _ was a horrible teacher.

Choice 1: Elena was trying to acquire new skills with the help of Rachel but Elena was a horrible teacher.
Choice 2: Elena was trying to acquire new skills with the help of Rachel but Rachel was a horrible teacher.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.