Asap ! horizontal lines e and f are intersected by lines a and b. at the intersection of lines a and e, the uppercase left angle is 75 degrees. at the intersection of lines b and e, the uppercase right angle is 115 degrees. at the intersection of lines a and f, the bottom right angle is 75 degrees.
which lines are parallel? justify your answer.

lines a and b are parallel because their alternate exterior angles are congruent.
lines a and b are parallel because their same side exterior angles are supplementary.
lines e and f are parallel because their alternate exterior angles are congruent.
lines e and f are parallel because their same side exterior angles are congruent.