下列程序中划线处正确的语句是( )。 # include <iostream> using namespace std; class Base public: void fun()cout<<"Base:: fun" <<endl; ; class Derived:public Base void fun() ______ ∥显式调用基类的函数fun() cout<<"Derived:: fun"<<endl; ;
A. fun(); Base.fun(); C. Base::fun(); D. Base- >fun();