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;
程序的输出结果是

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