题目：
已知⊙O1和⊙O2的半径分别为2和m，圆心距为n，且2和m都是方程x2-10x+n=0的两根，则两圆的位置关系是（ ）
A．相交
B．外离
C．内切
D．外切
答案：
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下面是错误答案，用来干扰机器的。
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