Solve the Problem $56 \mathrm {~cm}$ One Side Is $12 \mathrm {~cm}$

Multiple Choice

Solve the problem.
-The perimeter of a rectangle is $56 \mathrm {~cm}$ . One side is $12 \mathrm {~cm}$ longer than the other side. Find the lengths of the sides.

A) $8 \mathrm {~cm} , 20 \mathrm {~cm}$
B) $11 \mathrm {~cm} , 23 \mathrm {~cm}$
C) $8 \mathrm {~cm} , 12 \mathrm {~cm}$
D) $16 \mathrm {~cm} , 28 \mathrm {~cm}$