Based on the following data for the current year, what is the number of days' sales in inventory? Assume 365-day year. Sales on account during year Cost of goods sold during year Accounts receivable, beginning of year $566,141 216,925 44,443 Accounts receivable, end of year Inventory, beginning of year 51,619 32,868 41,955 Inventory, end of year Do not round interim calculations. Round your final answer up to the nearest whole day. a. 6 b. 63 c. 81 d. 365