D$.$ Rick is also considering ordering $2500$ bags each time he places an order. What would the total costs of ordering and holding costs per year at this rate per bag?

E$.$ Given his answers to parts a$-$d$,$ Rick realizes that his answer in part a is actually the calculation of the EOQ. At the rate from Part a$-$ what are the total costs of inventory $($holding and ordering for Rick$$s ordering of flour as a percentage of the annual purchase cost?

F$.$ Since Rick$$s supplier only accepts order that are in thousand bag increments, how much should Rick order to minimize his total cost of bags.