18. For the data in Problem 16, at the end of the first quarter, inventory is 2,000 units. Marketing has revised the sales plan for quarters 2, 3, and 4 with a 20 percent reduction per quarter (i.e., remaining sales = 16,000).

Develop a level and chase plan for the revised forecast that provides for an inventory of at least 1,000 units at the end of each quarter. (Assume 50 people were in the workforce in the first quarter.)