Why was Trevor’s mother sent to live with her aunt?

A. She got into too much trouble at school and was expelled
B. Her parents didn't have enough money to raise her
C. Her aunt didn't have any children of her own, but she wanted a child
D. She didn't get along with her mother, and her father didn't want her

E. It is not specified in the given information why Trevor's mother was sent to live with her aunt.