WILL MARK BRAINLYEST

This triangle has one side that lies on an extended line segment.


Based on this triangle, what statement about x is true?



A. x = 43 because 71−28=43 and 28 + 43 = 71


B. x = 81 because 180 − 71 − 28 = 81


C. x = 99 because 28 + 71 = 99 and 99 − 28 = 71


D. x = 137 because 180 − 71 + 28 = 109 + 28 = 137