单项选择题

以下程序运行后的输出结果是
#include< string.h>
main()
char m[20]= 'a', 'b', 'c', 'd', n[]="abe", k[]="abcde";
strcpy (m+strlen (n), k); strcat (m, n);
prinff(" % d% d \n", sizeof(m), strlen (m));

A) 20 11
B) 9 9
C) 20 9
D) 11 11