Fill in the blank (_) in the following sentence from the following choices.
Sentence: Jason was able to prevent a headache while flying unlike Justin because _ remembered to take ibuprofen beforehand.

Choice 1: Jason was able to prevent a headache while flying unlike Justin because Jason remembered to take ibuprofen beforehand.
Choice 2: Jason was able to prevent a headache while flying unlike Justin because Justin remembered to take ibuprofen beforehand.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.