Based on the following data for the current year, what is the inventory turnover?

Sales on account during year $700,000
Cost of goods sold during year 270,000
Accounts receivable, beginning of year 45,000
Accounts receivable, end of year 35,000
Inventory, beginning of year 90,000

a) 9.7 b) 3.0 c) 2.5 d) 2.7