Redzone Corporation reported $400,000 in sales on account plus another $60,000 in cash sales last year. Cost of goods sold for the period totaled $220,000. The beginning balance in accounts receivable was $32,000 and the ending balance was $50,000. How much is the company's accounts receivable turnover?

9.2 times

4.8 times

8.0 times

12.5 times