On December $1$st$,$ Barclay Company sells merchandise on account to Weber Associates for $$20,000$ with terms $\frac{2}{10},\frac{n}{30}.$ On December $3$rd$,$ Weber Associates returns $$4,000$ of the merchandise. On December $9$ th$,$ payment is received from Weber Associates for the balance due. What is the amount of cash received?

$$14,400$

$$15,680$

$$16,000$

$$19,000$