C because B came before it.

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

int main() {

char ans;

printf("         (__)\n");
printf("         (oo)\n");
printf("  /-------\\/\n");
printf(" / |  %%%% ||\n");
printf("*  ||----||\n");
printf("   \"\"    \"\"\n");

do {

fflush(stdin);
printf("Are you a Cow? (y/n) ");
scanf("%c", &ans);
ans = toupper(ans);

} while (ans != 'Y');

printf("\nThank you for participating in something lame brought to you by yours truly.\n");

system("PAUSE");
return 0;

}

Are you a Cow?