please answer a through e. thank you

You're a buyer for Quality Kitchen Appliances. The store has a demand for 50 toaster ovens per month. The cost of each toaster is $47.00. The ordering cost is $32 per order. The holding cost is 20% of the cost of the oven per unit per year. a. What is the optimal ordering quantity? (Select] b. How many orders will be placed per year? [Select] c. What is the total annual cost, including the cost of the toasters? $ [Select) d. If the holding cost increases to 25% of the unit cost of the oven, what is the new EOQ? [ Select , and the new total annual cost? $ Select) e. Suppose the store manager purchases 90 ovens per order instead of the EOQ. What impact will the 90-unit order size have on the firm's total annual cost? (Note: holding cost remains at 25%) $ Select)