Fill in the blank (_) in the following sentence from the following choices.
Sentence: Matthew loved salmon more than Kyle because _ couldn't eat seafood because he was allergic to it.

Choice 1: Matthew loved salmon more than Kyle because Matthew couldn't eat seafood because he was allergic to it.
Choice 2: Matthew loved salmon more than Kyle because Kyle couldn't eat seafood because he was allergic to it.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.