Table $1$ A large distribution center uses some part$-$time employees in its workforce. Each part$-80$ hours per month$)$ are given in the following table for the next six periods. The current workforce level is $60,$ and overtime cannot exceed $25\%$ of regular$-$time capacity. Hiring cost $$100/$worker Layoff cost $$50/$worker $.$ overtime cost $150\%$ of regular$-$time rate Month Total Inputs Forecasted demand Workforce level Undertime Overtime Derived Utilized time Hires Layoffs Total $505075755050$ Use a level strategy with overtime and undertime. Minimize undertime by maximizing overtime during the peak period. If the firm does not pay undertime, what is the total cost of the staffing plan including the cost of regular wages, hiring, and layoffs? O greater than $$160,000$ but less than or equal to $$162,000$ o greater than $$162,000$ O less than or equal to $$158,000$ o greater than $$158,000$ but less than or equal to $$160,000$ The total cost of the staffing plan, including the cost of regular wages, hiring, and layoffs, using a chase strategy with hiring and layoffs but no overtime, is: O greater than $$125,000$ but less than or equal to $$125,500.$ O greater than $$125,500$ but less than or equal to $$126,000$ O greater than $$126,000.$ O less than or equal to $$125,000.$