The graph shows quadrilaterals Q and R. y
8
6
41
2
2 4 6 8
-8 -6 -4 -2
-21
R
-4
Which statement justifies whether or not the two quadrilaterals are congruent?
A. Yes, because R is the result of reflecting Q across the x-axis.
B. Yes, because R is the result of reflecting across the line y = x.
C. No, because R can only be obtained from Q by a series of rigid transformations.
D. No, because R cannot be obtained from Q by a series of rotations and translations.
E. Yes, because R is the result of rotating O by 90° counter-clockwise about the origin.