应在下列程序划线处填入的正确语句是（ ）
#include ＜iostream.h＞
class Base
{public:
void fun(){cout＜＜"Base::fun"＜＜ENDL;}
};
class Derived:public Base
{ void fun()
{_____________//显示调用基类的函数fun()
cout＜＜"Derived::fun"＜＜ENDL;
}
};

A、fun();
B、Base.fun();
C、Base::fun();
D、Base-＞fun();