单项选择题

有如下程序:
#include<iostream>
using namespace std;
class BASE{
public:
~BASE(){cout<<"BASE";)
};
class DERIVED:public BASE{
public:
~DERIVED(){cout<<"DERIVED";}
};
int main(){DERIVED x;return 0;}
执行后的输出结果是 ____

A.BASE
B.DERIVED
C.BASEDERIVED
D.DERIVEDBASE
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