please help

An large auto repair shop has been purchasing ring wheels for the car at the rate of 20 steering worden. The times that word $28 per year, and that ordering costs about $265 per order. The current price of each weering wheel 500. Themption of the mostFor what annual demand (D) is their current action optimal? units per order holding cost order cost product cost 250 units $28 per unit per year $265 per order $200 per unit Excel Access