You purchased a home for $$320000.$ The loan requires a down payment of $25\%$ of the purchase price. The rest will be borrowed through a $3\mathrm{.}75\%$ annual amortized loan with annual payments for $15$ years. What will the annual payment be on the loan?

a $-$ $$9000$

b $-$ $$21210$

c $-$ $$17948$

d $-$ $$13461$

e $-$ $$28280$