设有函数模板template Q Sum(Q x,Q y) {return (x)+(y);} 则下列语句中对该函数模板错误的使用是（）

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【单选题】【消耗次数：1】

① Sum(10,2);

② Sum(0,7)；

③ Sum(2f,0f);

④ Sum(“AB”,”CD”);

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