下列程序中划线处正确的语句是( )。
#include <iostream>
using namespace std;
class Basepublic:
void fun() cout<<"Base:: fun"<<end1;
;
class Derived: public Base void fun()
_______________________ //显试调用基类的函数 fun()
cout <<"Derived:: fun"<<end1;
;
A.fun();
B.Base. fun();
C.Base:: fun();
D.Base->fun();