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".

Megan asked Elena what time she had to go to the doctor but _ forgot what time the appointment was. (A) Megan (B) Elena
B

john poured the entire bag of gold into the treasure chest until the _ was empty. (A) chest (B) bag
B

Rachel took their dog for a walk while Lindsey played with their dog at home, and _ enjoyed the fresh air. (A) Rachel (B) Lindsey

A