Does this need a yes or no answer or a right or wrong one?

Hello, teachers!

A; Is this the book you are looking for?
B; [______] Where did you find this anyway?
Would you please tell me which is the correct reply in the place of [____], 1, 2, or both?
1. That's right.
2. Yes, it is.

Thank you very much.
Enjoy twinkling stars in the dark sky.
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