Fill in the blank (_) in the following sentence from the following choices.
Sentence: When the tank needed to be cleaned, Betty left so Maria would have to do it. _ felt imposed upon.

Choice 1: When the tank needed to be cleaned, Betty left so Maria would have to do it. Betty felt imposed upon.
Choice 2: When the tank needed to be cleaned, Betty left so Maria would have to do it. Maria felt imposed upon.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.