$3.$ A company is trying to decide between using TL $($Truck Load$)$ versus LTL $($Less than truck load$)$ for ordering a certain item. The item cost is $$50$ for each unit, the ordering cost is $$100/$order paid to the supplier, and the holding cost is $20\%$ per year. The trucking cost is $$400$ for TL with a capacity of $750$ units of a truck and $$1$ per unit for LTL$.$ Should the company use TL or LTL if the annual demand for this item is