The contradiction is that in statements A and B they affirm that the angles DEH and GHJ are consecutive interior angles, while in statements C and D they state that these angles are corresponding angles.
The true is that those angles are corresponding angles.
Additionaly statements C and D are contradictroy to each other, because on says that the sum of the corresponding angles is 180 and the other says that they are congruent.
The rigth statement is D: given that angles DEH and GHJ are corresponding angles, they are congruent