Why does Trevor believe G stopped working at the clothing store?

A. He thinks G got a better job and was keeping it a secret from his friends
B. He thinks G got fired on purpose so that he would fit back in with his friends
C. He thinks G got into a fight with someone he worked and then quit
D. He thinks G was caught with stealing something then got fired

The information provided does not specify Trevor's beliefs about why G stopped working at the clothing store.