Plz i am stuck!
which statement completes the syllogism?
if a polygon is a square, then it has four congruent sides. if a polygon has four congruent sides, then it is a rhombus.
therefore,

a: if a polygon is a square, then it is a rhombus
b: if a polygon is a rhombus, then it is a square
c: if a polygon is a rhombus, then it is a parallelogram
d: if a polygon has four congruent sides, then it is a square