please explain

Oakton Manufacturing, Inc., has a master production plan for an item as shown in the table below. Inventory holding cost is $3 per unit per week; setup cost is $80 per order; beginning on-hand inventory is 50 units; Lead time is 2 weeks. Assume that lot-for-lot is used as the lot-sizing technique. MRP Lot Sizing: Lot-for-Lot Technique Week 1 2 3 4 5 6 7 8 9 10 Gross requirements 120 180 160 200 Scheduled receipts Projected on-hand inventory 50 Net requirements Planned order receipts Planned order releases Holding cost = $3 per unit per week; Setup cost = $80 per order; Lead time = 2 weeks Question 16 (2 points) Projected on-hand inventory in Week 3 = units. Round the final answer (if it is not an integer) to the nearest integer. Question 17 (2 points) units. Net requirement in Week 3 = Round the final answer (if it is not an integer) to the nearest integer. Question 18 (2 points) Planned order receipt in Week 3 = units. Round the final answer (if it is not an integer) to the nearest integer