R$.$ C$.$ Barker makes purchasing decisions for his company. One product that he buys costs $$50$ per unit when the order quantity is less than $500.$ When the quantity ordered is $500$ or more the price per unit drons to $$48.$ The ordering cost is $$30$ per order and the annual demand is $7,500$ units. The holding cost is $10$ percent of the purchase cost. If $R.$ C$.$ wishes to minimize his total annual inventory costs, he must evaluate the total cost for two possible order quantities. What are these two possible quantities? $($Round answer to nearest unit.$)$

O$200$ and $306$

O$306$ and $50$

$300$ and $306$

$300$ and $500$