Fill in the blank (_) in the following sentence from the following choices.
Sentence: Rachel had always loved dogs but Amy was a cat person, as _ was bitten by a dog as a child.

Choice 1: Rachel had always loved dogs but Amy was a cat person, as Rachel was bitten by a dog as a child.
Choice 2: Rachel had always loved dogs but Amy was a cat person, as Amy was bitten by a dog as a child.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.