Livingston Fabrication has created the following aggregate plan for the next five months: Assume that Livingston will have nothing in inventory at the end of July. Livingston employs 1,000 production assembly workers and it takes one production assembly worker 5 minutes to assemble one unit of finished good. (The unit is complete at that point.) Each production assembly worker can provide 150 hours of assembly time a month without requiring overtime pay. Livingston wants to complete this plan without working any overtime in assembly. Logically, how many additional production assembly workers should Livingston hire to start in August? a. 145 b. none c. 112 d. 224 e. 64