Marie rubs a balloon against a small piece of wool for about 30 seconds, causing negative charges on the wool to transfer to the balloon. She then places the piece of wool against the balloon. Which of the following best describes what will happen next?
A. The positively-charged wool will stick to the negatively-charged balloon.
B. The negatively-charged wool will stick to the negatively-charged balloon.
C. The positively-charged wool will repel the negatively-charged balloon.
D. The negatively-charged wool will repel the positively-charged balloon.