Fill in the blank (_) in the following sentence from the following choices.
Sentence: The blue towel cannot be wrapped around the tree. The _ is a big one.

Choice 1: The blue towel cannot be wrapped around the tree. The tree is a big one.
Choice 2: The blue towel cannot be wrapped around the tree. The towel is a big one.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2. The towel is a big one.