Humming Corporation reported net credit sales of $$3,260,000$ for this year. The company had accounts receivable of $$375,000$ at the beginning of the year. During the year, the only transactions to affect receivables were the credit sale;s and collections of $$3,170,000.$ What was Humming's average days to collect?

a$.36\mathrm{.}5$ days

b$.42\mathrm{.}0$ days

c$.8\mathrm{.}7$ days

d$.47\mathrm{.}0$ days