all 3 pls

Item X is a standard item stocked in a company's inventory of component parts. Each year the firm, on a random bas/s, uses about 1,600 of item X, which costs $25 each. Storage costs, which include insurance and cost of capital, amount to $8 per unit of average inventory, Every time an order is placed for more of item X, it costs $16. a. Whenever item X is ordered, what should the order size be? Note: Round your answer to the nearest whole number. b. What is the annual cost for ordering item X ? Note: Round your order quantity to the nearest whole number and your final answer to 2 decimal places. c. What is the annual cost for storing item X? Note: Round your order quantity to the nearest whole number and your final answer to 2 decimal places