单项选择题

有以下程序
#include<stdio.h>
main()
(char a[3 0], b[30];
scanf("%s", a);
gets(b);
printf("%s\n%s\n", a, b);
程序运行时若输入:
how are you I am fine<回车>
则输出结果是______。

A) how are you
I am fine
B) how
are you I am fine
C) how are you I am fine
D) how are you