单项选择题

下列程序中下画线处应填入的语句是
class Base

public:
void fun( ) cout < < "Baseoffun" < < endl;
;
class Derived:public Base

void fun( )

______//显示基类的成员函数fun
cout < < "Derived of fun" < < endl;

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