Jason is trying to prove that this quadrilateral is a rhombus. Using the slope formula, he finds that opposite sides of the polygon are parallel. Since all of the sides appear to be congruent, Jason concludes that ABCD is a rhombus. Is Jason's reasoning correct? Why or why not?

A) correct; Jason can tell by looking at the graph that all sides are congruent.
B) correct; A rhombus has two pairs of parallel sides which may or may not be congruent.
C) incorrect; Jason must also prove that all sides are congruent by using the distance formula.
D) incorrect; A rhombus does not have two pairs of parallel sides. Jason must prove that all sides are congruent.