已知半径为1的圆的圆心在原点,半径为3的圆的圆心坐标是(-,1 ),则两

已知半径为1的圆的圆心在原点,半径为3的圆的圆心坐标是(-,1 ),则两圆的位置关系是：（）

A．外切 B．内切 C．外切或内切 D．以上都不对

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