AMC 8 1993 Problem 6

A can of soup can feed $3$ adults or $5$ children. If there are $5$ cans of soup and $15$ children are fed, then how many adults would the remaining soup feed? $\text{(A)}\ 5 \text{(B)}\ 6 \text{(C)}\ 7 \text{(D)}\ 8 \text{(E)}\ 10$