Jiao is an instructor in CPR. She is demonstrating on a dummy how to perform the procedure. After showing students the correct positioning for chest compressions, she performs 30 compressions. Jiao explains that if there is no response, they should begin to give rescue breaths. She puts her hand on the dummy’s forehead and tilts it back so that the chin is up. Why does Jiao tell her students to put the dummy in this position? A. so they can get their mouth over the dummy’s mouth and nose B. to make sure that the dummy’s airway is open C. so no stress is put on the dummy’s spinal cord D. because a dummy is more flexible than a real person