Freiman Corporation's most recent balance sheet and income statement appear below: Balance Sheet December 31, Year 2 and Year 1 (in thousands of dollars)

Assets Year 2 Year 1
Current assets:
Cash $160 $120
Accounts receivable, net 220 240
Inventory 120 130
Prepaid expenses 40 40
Total current assets 540 530
Plant and equipment, net 700 700
Total assets $1,240 $1,230

Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable $130 $150
Accrued liabilities 90 90
Notes payable, short term 60 70
Total current liabilities 280 310
Bonds payable 280 290
Total liabilities 560 600
Stockholders' equity:
Common stock, $2 par value 100 100
Additional paid-in capital 200 200
Retained earnings 380 330
Total stockholders' equity 680 630
Total liabilities
& stockholders' equity $1,240 $1,230

Income Statement, For the Year Ended December 31, Year 2, (in thousands of dollars)

Sales (all on account) $1,310
Cost of goods sold 780
Gross margin 530
Selling and administrative expense 359
Net operating income 171
Interest expense 35
Net income before taxes 136
Income taxes (30%) 41
Net income $95

Required:

The average sales period for Year 2 is closest to:

a. 58.5 days
b. 33.4 days
c. 217.3 days
d. 56.2 days