ortheast University produces unique booklets for its students to use during their examination period. The booklets are purchased in packages of 500 at a total cost of $750 per package. The University uses approximately 10 140 packages of booklets annually and exams are held for student courses throughout the year. The lead time to receive an order of booklets is two weeks. No safety stock is kept. There is no shutdown period allocated for the year. What is the optimal package reorder point for the booklets? a. 406 units b. 390 units c. 195 units d. 293 units