Based on the following data, what are the accounts receivable turnover? 

Sales on account during the year                $424,485 

Cost of goods sold during year             150,969 

Accounts receivable, beginning of year 41,881 

Accounts receivable, end of year            54,742 

Inventory, beginning of year                   96,062 

Inventory, end of year                              107,958

select the correct answer

a). 7.78

b). 6.78

c). 9.78

d). 8.78