有如下程序： #include＜iostream＞ using namespace std; class BASE { public

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(){DERIVEDx;retum 0;} 执行后的输出结果是

A．BASE

B．DERIVED

C．BASEDERIVED

D．DERIVEDBASE