Fill in the blank (_) in the following sentence from the following choices.
Sentence: Matthew gets up at 6 AM while Christopher works the night shift. Fortunately, _ is in deep sleep when the soft alarm rings at 6.

Choice 1: Matthew gets up at 6 AM while Christopher works the night shift. Fortunately, Matthew is in deep sleep when the soft alarm rings at 6.
Choice 2: Matthew gets up at 6 AM while Christopher works the night shift. Fortunately, Christopher is in deep sleep when the soft alarm rings at 6.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.