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".

The medical exam for the broken arm was longer than the exam on the heart because the _ was a serious problem. (A) heart (B) arm
B

Katrina trained Tanya to do aerobic exercise because _ was a trainer in great shape. (A) Katrina (B) Tanya
A

Tanya's cat gets worse care than the one that Maria is raising. _ is a mean pet owner. (A) Tanya (B) Maria

A