At the beginning of 2011, Clay Ventures has accounts receivable of $100,000. By the end of 2011, Clay reports net credit sales of $1,900,000, cost of goods sold of $920,000 and accounts receivable of $200,000. What is the average collection period for 2011 for Clay?
a. 39.7 days
b. 59.5 days
c. 28.8 days
d. 38.4 days