Select all that apply. Among the compounds below, identify those that have a chirality axis. A: (CH_3)_3C- B: (CH_3)_3C- X: H- Y:G- A: (CH_3)_3C- B: H- X: (CH_3)_3C- Y: H- A: (CH_3)_3C- B: (CH_3)_3C- X: (CH_3)_3C- A: (CH_3)_3C- B: H- X: H-