Fill in the blank (_) in the following sentence from the following choices.
Sentence: Matthew is better at installing siding on houses than Randy because _ works in the construction industry.

Choice 1: Matthew is better at installing siding on houses than Randy because Matthew works in the construction industry.
Choice 2: Matthew is better at installing siding on houses than Randy because Randy works in the construction industry.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.