In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".

[Q]: It was Tanya's turn to clean the bathtub and Natalie's turn to clean the sink. _ was obligated to clean the bathtub. (A) Tanya (B) Natalie
[A]: A


[Q]: Though they both owned guitars Rebecca actually played while Amy didn't because _ knew how to read music. (A) Rebecca (B) Amy
[A]: A


[Q]: Nora was boiling some pasta in a pot of water for dinner and made a mess. The _ she put in it was too high. (A) water (B) pot
[A]:
A