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单项选择题

下列程序的输出是:()
var add = function (params){params = {'k2':2};
console.log(params, obj);}
var obj = 'k1":13;add(obj);

A.{k2:2}{k1:1}
B.{k2:2}{k1:2}
C.{k1:1}{k1:1}
D.{k1:1}{k2:2}

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