The financial statements of the Randolph Merchandising Company report net sales of $$750,000$ and accounts receivable of $$100,000$ and $$140,000$ at the beginning of the year and end of year, respectively. What is the accounts receivable turnover for Randolph?

$10\mathrm{.}0$ times

$7\mathrm{.}5$ times

$6\mathrm{.}25$ times

$5\mathrm{.}35$ times