Fill in the blank (_) in the following sentence from the following choices.
Sentence: The paint stripper worked perfect for the water-based paint however did not take off oil-based paint as the _ was heavy.

Choice 1: The paint stripper worked perfect for the water-based paint however did not take off oil-based paint as the water-based paint was heavy.
Choice 2: The paint stripper worked perfect for the water-based paint however did not take off oil-based paint as the oil-based paint was heavy.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.