If the function declaration is void fun (char * a, int n, int & m);
Which of the following statements is true ？
A、char str[10];
int *p, m;
fun( str, m, p );
B、char *p = new char[10];
int n, m;
fun( p, m, &n );
C、char *p = new char[10];
int n, m;
fun( p, m, n );
D、char *p = new char[10];
int n;
fun( p, &n, 6 );
的法向量为：