Please answer parts B and C. Show equations used if possible. Thank you!!

A dairy farm manager sells 600,000 gallons of milk per month. She charges her customers 75cents/gallon. She currently orders 100,000 gallons every 5 days. If we know: -Demand occurs at a constant rate - Regardless of order size, the cost of placing any order is $40 - Annual cost of holding inventory is 4% of the value of unit price (price/gallon) - These known factors don't change over time Showing all your work, Answer the following Questions: a) What is the annual holding cost and ordering cost? b) What is the total annual inventory cost? c) Should the manager place smaller orders more frequently? Use the EOQ formula and find annual ordering cost, annual holding cost, and total annual inventory cost. Comment on the results