Parallel lines p, q, and rare cut by transversal t. Which of these describes how to find the value of x

1. Lines q and r are parallel, so the corresponding angles are congruent; X = 50.

2. Lines q and r are parallel so the interior angles are supplementary; x=130

3. Lines p and r are parallel so the alternate exterior angles are congruent; X =130

4. Lines p and r are parallel, so the alternate exterior angles are supplementary; X= 50.