如图7-26,将矩形ABCD对角线的交点与直角坐标系的原点重合,若点A的坐标为(3,2),则点B、点C、点D的坐标分别是

图7-26

A.(3,-2)(-3,2)(-3,-2)                        B.(-3,2)(-3,-2)(3,-2)

C.(2,-3)(-2,-3)(-2,3)                        D.(-2,3)(-2,-3)(2,-3)