单选题：5-7. 下列程序的输出结果是

5-7. 下列程序的输出结果是 @[B](2)
```c++
#include

void fun(int a, int b, int c) {
a = 456; b = 567; c = 678;
}
int main()
{
int x = 10, y = 20, z = 30;
fun(x, y, z);
printf("%d, %d, %d\n", x, y, z);
return 0;
}
```

A. 30, 20, 10
B. 10, 20, 30
C. 456, 567, 678
D. 678, 567, 456





A.30, 20, 10
B.10, 20, 30
C.456, 567, 678
D.678, 567, 456


答案：B