⟩ What is the output of this program? #include<stdio.h> #include<signal.h> void response (int); void response (int sig_no) { printf("%sn",sys_siglist[sig_no]); } int main() { pid_t child; int status; child = fork(); switch(child){ case -1 perror("fork"); case 0 break; default signal(SIGCHLD,response); wait(&status); break; } } a) this program will print nothing b) this program will print "Child Exited" c) segmentation fault d) none of the mentioned