Instructions Case 2: 8% of the Final grade. Zig inc. begins each week with 300 phasers in stock. This stock is depleted each and reordered. The carrying cost per phaser is $38 per year and fixed order cost is $75. Required: 1. What is the total carrying cost? 2. What is the restocking cost? 3. Should Zig increase or decrease its order size? 4. Describe an Optimal inventory policy for Zig in terms of order size and order frequency?