Iam giving 35 points to whomever answers which statement represents a crucial step to proving the pythagorean theorem using this diagram? a) the large square on the left contains two smaller squares. b) the area of the blue square is not equal to the area of the yellow square. c) the large square on the right contains a smaller square with side length c. d) both large squares have side lengths of b + a, so we can conclude that the large squares have the same area.