What attribute does a rectangle and a square always have in common?

Responses
A Both figures always have four sides of equal length.Both figures always have four sides of equal length.
B Both figures always have only one pair of parallel sides.Both figures always have only one pair of parallel sides.
C Both figures always have two longer sides and two shorter sides.Both figures always have two longer sides and two shorter sides.
D Both figures always have four right angles.

D Both figures always have four right angles.