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若圆C与圆
A.\({\left( {x - 2} \right)^2} + {\left( {y + 1} \right)^2} = 1\)
B.\({\left( {x - 2} \right)^2} + {\left( {y - 1} \right)^2} = 1\)
C.\({\left( {x - 1} \right)^2} + {\left( {y + 2} \right)^2} = 1\)
D.\({\left( {x + 1} \right)^2} + {\left( {y - 2} \right)^2} = 1\)
参考答案:A