Fill in the blank (_) in the following sentence from the following choices.
Sentence: Paul couldn't decide between a android or iOS device but chose an android because the _ was closed-source.

Choice 1: Paul couldn't decide between a android or iOS device but chose an android because the iOS was closed-source.
Choice 2: Paul couldn't decide between a android or iOS device but chose an android because the android was closed-source.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2. This is incorrect because the sentence states "Paul couldn't decide between a android or iOS device but chose an android because the _ was