Why were Chow and his mother still unhappy at the end of the selection?

Why were Chow and his mother still unhappy at the end of the selection?
A They wanted to find the tortoise to apologize for Chow’s actions.
B They couldn’t understand why Ty had changed his name.
C They were complainers who would never be satisfied with their lives.
D They had planned to move into Ty’s magnificent home with him.