为使下列程序的正确输出结果为：Now is 2004-7-6 12:12:12 那么应该在程序划线处填入的语句是( )。 #include ＜iostream＞ using namespace std; class TIME; class DATE { public:DATE(int y=2004,int m=1,int d=1){ year=y; month=m; day=d;}void DateTime(TIME &t); private:int year,month, day; }; class TIME { public:TIME(int h=0,int m=0,int s=0){ hour=h; minute=m; second=s;}______________; //将类 DATE 中成员函数 DateTime 声明为类 TIME 的友元函数 private:int hour,minute, second; }; void DATE: :DateTime(TIME &t) {cout＜＜"Now is "＜＜year＜＜’-’＜＜month＜＜’-’＜＜day＜＜’ ’＜＜t.hour＜＜":"＜＜t.minute＜＜’: ’＜＜t.seoond＜＜’.’＜＜end1; } int main ( ) { DATE d(2004,7,6); TIME t (12, 12, 12); d. DateTime (t); return 0; }

A．friend void DateTime(TIME &;

B．friend void DATE::DateTime(TIME &0;

C．void DateTime(TIME &;

D．friend void DateTime(TIME &;