Develop an aggregate plan using the same strategy from part a, except that backlogs are allowed here. There should be no backlog remaining at the end of September. Hint: Use a maximum backlog of 5 in any given month. You will need to develop a set of rules regarding which capacity option (regular, overtime, subcontracting) is always preferable, and regarding the timing of these options (i.e., is it cost-effective to build ahead (and thus carry inventory) or to incur a backlog