please answer within 30 minutes.

NlL @014:- Write a C program that performs the following tasks . The program should create a group. . The program should create three child processes and add them to the group. . Each child process should display its PID and the group ID . The first child should display all the numbers even numbers between 0 and 100. . The second child should execute the command "ls -l - a . The third child should display an echo message "CSE401: Operating Systems Lab Final". . The main program should display the message "All child processes have completed" and then exits