At the school's holiday craft fair, Richard and his classmates get to make gingerbread houses.
Their teacher divides a bag of licorice ropes evenly among the 7 students at the table. Each student gets 5 licorice ropes to decorate the roof of his or her gingerbread house.
Which equation can you use to find the number of licorice ropes r that came in the bag?

A-7г = 5
B-r- 7= 5
C-r+ 7=5
D-r/7=5

Solve this equation for r to find the number of licorice ropes that came in the bag.
____ licorice ropes