Based on the given data, we solve for Plan B using POM-QM as shown below:
We enter the required data as shown below:

On solving, we get

Based on above, we tabulate the required data in the table format as per question:

As seen from above,
Total hiring cost $ 24000
Total layoff cost $ 13000
Total inventory carrying cost $ 7000
Total stockout cost $ 60000
Total cost, excluding normal time labor costs, for Plan B $ 104000
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Period Demand Regular time Capacity Overtime Capacity Subcontract Capacity Unit costs Value 1 2 3 4 1300 1150 1100 1600 1900 1900 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 Regular time Overtime Subcontracting Holding/carrying cost Lost sales cost Increase cost Decrease cost Initial Inventory Units last period 0 0 0 20 100 30 65 0 1300 03
Demand Regular time Capacity Regular time production Inventory (end PD) Shortage (end PD) Units increase Units decrease Initial Inventory = 0 0 1 unlimited 1300 0 0 0 0 2 0 0 3 0 150 4 1300 1150 1100 1600 1900 1900 8950 0 50 5 0 1300 1150 1100 1600 1900 8350 @$0 /unit $0 150 0 200 0 0 300 0 300 0 0 350 600 @$20 /unit @$100/unit $7000 $60000 0 6 Total(units) 500 300 800 @$30 /unit $24000 200 @$65 /unit $13000 Subtotal Costs Total Cost $104000
Month Demand Production Hire (Units) 0 Layoff (units) 0 Ending Inventory 0 150 200 Stockouts (Units) 0 0 0 0 0 0 1 July 2 August 3 September 4 October 5 November 6 December 1300 1150 1100 1600 1900 1900 1300 1300 1150 1100 1600 1900 0 150 50 0 0 300 500 300 0 0 300 0 0
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