Baker Company manufactures backpacks. A heavy-duty strap is one part the company orders from an outside supplier. Information pertaining to the strap is as follows: Economic order quantity 4,200untis Average daily usage 210units Maximum daily usage 250units Minimum daily usage 180units Lead time 2-4days Required: (a) What is the reorder level? (b)What is the average inventory level assuming no safety stock is carried? (c)What is the average inventory level assuming that safety stock is carried?