Segment RSRS is parallel to segment VTVT, and segment RVRV is parallel to segment STST. Which statement about the measure of ∠S∠S is NOT true?

the options are:
A. measurement of angle S = measurement of angle V
B. measurement of angle S = meansurement of angle R
C. measurement of angle S = 180 degrees - measurement of angle T
D. measurement of angle S = 180 degrees - measurement of angle R

The answer s B. The lines form a parallelogram