Fill in the blank (_) in the following sentence from the following choices.
Sentence: Christopher found it easy to shake off the taunts of their haters but Nelson couldn't. _ had a very calm demeanor.

Choice 1: Christopher found it easy to shake off the taunts of their haters but Nelson couldn't. Christopher had a very calm demeanor.
Choice 2: Christopher found it easy to shake off the taunts of their haters but Nelson couldn't. Nelson had a very calm demeanor.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.