Which figure must be a square?
A.
a quadrilateral with four right angles
B.
a rhombus with four right angles
C.
a parallelogram with four congruent sides
D.
a quadrilateral with congruent sides
A.
a quadrilateral with four right angles
B.
a rhombus with four right angles
C.
a parallelogram with four congruent sides
D.
a quadrilateral with congruent sides