Given a Figure whose points are A(4, 5), B(2, -1), C(0, 0), D(-4, -1).
What would be the image of that figure if it goes under a reflection across the line y = 1, what is the
coordinate of B'?
A. B'(2, 3)
B. B'(3, 1)
C. B'(-2,3)
D. B'(2, -3)