In the figure, line L1 is parallel to line L2. If the measure of <1 = 146°, what is the measure of <8 and why?
A. 146°, alternate exterior angles are supplementary.
B. 146°, same side exterior angles have the same measure.
C. 146°, alternate exterior angles have the same measure.
D. 146°, alternate interior angles are congruent.
