(2011?聊城)如图,矩形OABC的顶点O是坐标原点,边OA在x轴上,边OC在y轴上.若矩形OA1B1C1与矩形OABC关于点O位似,且矩形OA1B1C1的面积等于矩形OABC面积的14,则点B1的坐标是( )A.(3,2)B.(-2,-3)C.(2,3)或(-2,-3)D.(3,2)或(-3,-2)