3. Specification and Grading Rubric As noted above, the program should use fork () to start each new process and wait () to collect the return status (and possibly check the PID) of each. Your assignment will be graded according to the rubric on the following page; partial credit mav be given if you successfully complete part of a given objective. Please note that you should not submit separate files for each objective -your sole submission will be judged on how many of the tasks below it accomplishes successfully. The rubric may also be used as an outline for developing your program--for example, first write a program that accomplishes objective A, then modify it to accomplish objective B, and so on. In the rubric, objective A is the base case -you cannot complete any of the other objectives without completing that one, and the number of points listed with that objective is essentially the minimum you can earn with a working program. For each additional objective, the number of points will be added to your base score. Note also that it is possible to complete some of the later objectives without completing earlier ones. Sample outputs from solutions satisfying each objective are shown in Section 5: Test Cases