Fill in the blank (_) in the following sentence from the following choices.
Sentence: Samuel could really smell the wet dog on the furniture of the rental whereas Matthew couldn't, as _ has a stronger sense of smell.

Choice 1: Samuel could really smell the wet dog on the furniture of the rental whereas Matthew couldn't, as Samuel has a stronger sense of smell.
Choice 2: Samuel could really smell the wet dog on the furniture of the rental whereas Matthew couldn't, as Matthew has a stronger sense of smell.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.