Select the correct answer.
Given: p || q, and r || s.

Prove: ∠1 and ∠14 are supplementary angles.

What is the next step in the proof? Choose the most logical approach.

A.
Statement: ∠6 ≅ ∠14
Reason: For parallel lines cut by a transversal, corresponding angles are congruent.

B.
Statement: ∠6 ≅ ∠7
Reason: Vertical Angles Theorem

C.
Statement: ∠6 and ∠5 are supplementary.
Reason: Linear Pair Theorem

D.
Statement: m∠6 + m∠8 = 180°
Reason: angle addition