Fill in the blank (_) in the following sentence from the following choices.
Sentence: Carrie was given concert tickets by Mary; then _ sold them because she hated the artist.

Choice 1: Carrie was given concert tickets by Mary; then Carrie sold them because she hated the artist.
Choice 2: Carrie was given concert tickets by Mary; then Mary sold them because she hated the artist.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.