(d.) Explain, using examples how the following sample code, which utilises the linux fork(). wait() and exec() command, can be used to run new processes. (12 marks). Void execute (char* argv[]) { . /* variable declaration */ pid_t pid; int status; if ((pid = fork()) < 0) { here */ } else if (pid == 0) { printf("*** ERROR: forking child process failed "); exit(42); } if (execvp(*argv, argv) < 0) { printf("*** ERROR: exec failed "); exit(1): } } else { here */ /* What is happening while (wait(&status) != pid); /* what is happening here /* what is happening here */ /* what is happening