Based on the diagram, which reason justifies this statement?If ∠CEF is complementary to ∠DCF, then∠DCF ≅ ∠FEG.
A
Complements of the same angle are congruent.B
Complements of congruent angles are congruent.C
Supplements of the same angle are congruent.D
Supplements of congruent angles are congruent.