Buskirk Construction Buys on Terms of 2/15,net 60 Days

Buskirk Construction 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 $500,000 per year.On average,how much "free" trade credit does the firm receive during the year? (Assume a 365-day year,and note that purchases are net of discounts. )

A) $24,863
B) $19,315
C) $16,644
D) $20,548
E) $18,699