HELP PLEASE THIS IS A TEST FOR NEXT YEARS CLASS
A jewelry store sells charm sets that each contain three heart charms and c character charms. After buying several of these sets as gifts from the store, Mrs. Thompson had a total of 20 charms.
Which expression represents the number of charm sets Mrs. Thompson bought?
A. 20 / (3 + c)
B. 20 x 3 + c
C. 20 / 3 + c
D. 20 x (3 + c)