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