Helena stopped at Checkpoint C, which has coordinates (−4,5). She gets to Checkpoint D at (−3,2) by crawling underneath barbed wire. She will have to crawl underneath barbed wire between the next two checkpoints (E and F) as well. What are the coordinates of Checkpoints E and F if EF is located at CDs location in a 180∘ rotation of the course?

Select two answers: one for Checkpoint E and one for Checkpoint F.