A company using the perpetual inventory system purchased inventory worth $$25,000$ on account with terms of $\frac{3}{10},\frac{n}{30}.$ Defective inventory of $$2,000$ was returned two days later, and the accounts were appropriately adjusted. If the invoice is paid $10$ days after the invoice date, the amount of the purchase discount that would be available to the company is

A$.$ $$690$

B$.$ $$810$

C$.$ $$740$

D$.$ $$750$