I hope you can give me _____.[ ]

A. some advices    

B. many advices

C. two pieces of advice

D. two advice

下面程序的运行结果为( )。
#include＜iostream.h＞
void swap (int &a, int b)

int temp;
temp=a++;
a=b;
b=temp;

void main()

int a=2,b=3;
swap(a, b);
cout＜＜a＜＜","＜＜b＜＜end1;

A．2,3

B．3,2

C．2,2

D．3,3