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]: The divorce upset Katrina more than Natalie as _ didn't care for the person their mother had married. (A) Katrina (B) Natalie
[A]: B


[Q]: We moved out of the room to take the test in the hallway, as the _ made focusing difficult. (A) room (B) hallway
[A]: A


[Q]: Emily took longer to walk the mile than Mary did although _ had more problems with their joints. (A) Emily (B) Mary
[A]:
B