Kirk Development buys on terms of 2/15, net 60 days. It does not take discounts, and it typically pays on time, 60 days after the invoice date. Net purchases amount to $325,000 per year. On average, what is the dollar amount of total trade credit (costly + free) the firm receives during the year, i.e., what are its average accounts payable? (Assume a 365-day year, and note that purchases are net of discounts.)

a. $53,425

b. $51,288

c. $40,603

d. $47,548

e. $55,027