Allgood Pet Supplies reported net credit sales of $3,200,000 and cost of goods sol of $2,600,000 for 2012. On January 1, 2012, accounts receivable was $450,000. Amounts owed by customers increased by $50,000 during 2012. Rounding to two decimal places, what is the company's accounts receivable turnover rate for 2012? a. 6.40 b. 6.74 c. 7.11 d. 5.47