using the fixed$-$order quantity model, what are the total ordering and the total holding cost of inventory given an annual demand of $36,000$ units, a cost per order of $$80,$ and a holding cost per unit per year of $$4?$

$$1200,$ $$2400$

$$2400,$ $$1200$

$$2400,$ $$4800$

$$4800,$ $$4800$

$$2400,$ $$2400$