Question

PLEASE HELP!!
Which glide reflection describes the mapping triangle ABC--->triangle DEF?
Answer Choices:
1. (x,y)--->(x-3,y)and reflected across x=4
2. (x,y)--->(x,y-7)and reflected across x=4
3. (x,y)--->(x-3,y)and reflected across y=4
4. (x,y)--->(x,y-7)and reflected across x=0