The Deena Company's records were partially destroyed in a fire at the end of its fiscal year. The company knows that 60 percent of all sales made during the year were on account. Furthermore, it was able to determine that accounts receivable has a balance of $46,000 at the beginning of the year and $55,000 at the end of the year. Cash collections from credit customers were $477,000 during the year based on the deposits made in the company's account with the bank. What was the amount of sales revenue for the year? O a. $810,000 O b. $468,000 O c. $486,000 O d. $780,000