The balance sheet and income statement shown below are for Koski Inc. Note that the firm has no amortization charges, it does not lease any assets, none of its debt must be retired during the next 5 years, and the notes payable will be rolled over.

Balance Sheet (Millions of $)
Assets	Year 2019
Cash and securities	$3,000
Accounts receivable	15,000
Inventories	18,000
Total current assets	$36,000
Net plant and equipment	$24,000
Total assets	$60,000
Liabilities and Equity
Accounts payable	$18,630
Accruals	8,370
Notes payable	6,000
Total current liabilities	$33,000
Long-term bonds	$9,000
Total liabilities	$42,000
Common stock	$5,040
Retained earnings	12,960
Total common equity	$18,000
Total liabilities and equity	$60,000
Income Statement (Millions of $)
	Year 2019
Net sales	$84,000
Operating costs except depreciation	78,120
Depreciation	1,680
Earnings before interest and taxes (EBIT)	$4,200
Less interest	900
Earnings before taxes (EBT)	$3,300
Taxes	1,320
Net income	$1,980
Other Data
Shares outstanding (millions)	500
Common dividends (millions of $)	$693.00
Int rate on notes payable & L-T bonds	6%
Federal plus state income tax rate	40%
Year-end stock price	$47.52

Refer to the information above. What is the firm's quick ratio? Do not round your intermediate calculations.

Group of answer choices

0.61

0.55

0.65

0.52

0.50

Refer to the information above. What is the firm's operating margin? Do not round your intermediate calculations.

Group of answer choices

5.00%

4.80%

4.55%

5.85%

4.10%