4. You are graphing quadrilateral A , B , C , D in the coordinate plane . The length of segment A , B is the same as the length of segment D , C , and both segments are horizontal . The following are three vertices of the quadrilateral : , , . All you know about point B is that it is in the first quadrant . What are the coordinates of point B ? A(1, 1) C(4, 5, 4) D(- 1.5, 4)