Acme Company$$s budgeted production is $3,000$ units in October, $3,500$ units in November, and $4,000$ units in December. Each unit of finished goods requires $2\mathrm{.}0$ pounds of raw materials that cost $$3\mathrm{.}00$ per pound. Acme$$s policy is to maintain an ending raw materials inventory balance equal to $20\%$ of the amount needed for the next month$$s production. Acme pays for $30\%$ of its raw material purchases in the month of purchase and $70\%$ in the month following the purchase. What is the balance of the accounts payable account for raw materials purchases at the end of November?

Group of answer choices

$$6,480$

$$15,120$

$$17,280$

$$21,600$