Fill in the blank (_) in the following sentence from the following choices.
Sentence: Tanya drank almond milk while Rachel drank whole milk, _ tended to lose more weight.

Choice 1: Tanya drank almond milk while Rachel drank whole milk, Tanya tended to lose more weight.
Choice 2: Tanya drank almond milk while Rachel drank whole milk, Rachel tended to lose more weight.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.