Question

PLEASE HELP !!

Points G (-8, -2), H (-6, -2), I (-6, -4), and J (-8, -4) are plotted on a coordinate grid. Which statement is correct about the points?

a) They do not form a square because the diagonals are not congruent.
b) They do not form a square because the side lengths are not congruent.
C) They form a square because GI is perpendicular and congruent to GH and GJ.
d) They form a square because the segments GH, HI, IJ, and JG are congruent sides of the quadrilateral.

Im assuming that both a and b are incorrect but please advise me through this!