Luther's Inventory days is closest to ________

Luther Industries had sales of $980 million and a cost of goods sold of $560 million in 2006.
A simplified balance sheet for the firm appears below:

Luther Industries
Balance Sheet
As of December 31, 2006
(millions of dollars)
Assets Liabilities and Equity
Cash 25 Accounts payable 60
Accounts receivable 85 Notes payable 425
Inventory 90 Accruals 45
Total current assets 200 Total current liabilities 530
Net plant, property, and equipment 6100 Long term debt 2725
Total assets 6300 Total liabilities 3255
Common equity 3045
Total liabilities and equity 6300

A) 32 days
B) 59 days
C) 39 days
D) 42 days

Answer: B