Fill in the blank (_) in the following sentence from the following choices.
Sentence: Carrie was more computer literate than Natalie, so _ didn't need anyone to explain the software.

Choice 1: Carrie was more computer literate than Natalie, so Carrie didn't need anyone to explain the software.
Choice 2: Carrie was more computer literate than Natalie, so Natalie didn't need anyone to explain the software.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.