Fill in the blank (_) in the following sentence from the following choices.
Sentence: Once the mind is made up, Neil will not change it but Kyle might as _ is very stubborn.

Choice 1: Once the mind is made up, Neil will not change it but Kyle might as Neil is very stubborn.
Choice 2: Once the mind is made up, Neil will not change it but Kyle might as Kyle is very stubborn.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.