Fill in the blank (_) in the following sentence from the following choices.
Sentence: Eric had to make sure to stay close to bathrooms but not Kevin because _ had Giardiasis.

Choice 1: Eric had to make sure to stay close to bathrooms but not Kevin because Eric had Giardiasis.
Choice 2: Eric had to make sure to stay close to bathrooms but not Kevin because Kevin had Giardiasis.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2.