A:would be saved
B:would have been saved
C:will be saved
D:had been saved
如图是某战役中缴获敌人防御工程的坐标地图碎片,依稀可见:一号暗堡的坐标为(1,2),四号暗堡的坐标为(﹣3,2).另有情报得知:敌军指挥部坐标为(0,0),你认为敌军指挥部的位置大约是在____ .