TASK DEFINITION: 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".
PROBLEM: 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

SOLUTION: A

PROBLEM: Victoria was a prisoner and Carrie was a guard, so it was a good day for _ when they escaped the prison. (A) Victoria (B) Carrie

SOLUTION: A

PROBLEM: Because Erin owned a cat while Carrie owned a dog, _ needed to buy milk-bones. (A) Erin (B) Carrie

SOLUTION:
B