W(-1, 4), X(4, 0), Y(-5, 1), and Z(0, -3) are vertices of quadrilateral WXZY. What is true of WX and yz?
A. wx and yz are parallel.
B. WX and yz are skewed.
C. WX and yz are perpendicular.
D. There is not enough information to make a valid conclusion.
