Identify the values of pid at lines A, B, Cand D in the following program. (Assume that the actual the parent and child are 2600 and 2603, respectively.) #include #include #include int main () { pid_t pid, pidi; * fork a child process */ pid = fork(); if (pid < 0) { /* error occurred */ fprintf (stderr, "Fork Failed"); return 1; } else if (pid == 0) { /* child process */ pid1 = getpidO; printf ("child: pid = %",pid); /* A */ printf ("child: pid1 = %" ,pid1); /* B */ else { /* parent process */ pid1 - getpid(); printf ("parent: pid = %d" pid); /* C / printf ("parent: pid1 = %" pid1); / D */ wait (NULL); return 0;

}