Luther Corporation
Consolidated Income Statement
Year ended December 31​ (in $millions)
2006 2005
Total sales 610.1 578.8
Cost of sales ​ (500.2) ​(355.3)
Gross profit 109.9 223.5
​Selling, general, and
administrative expenses ​ (40.5) ​(38.7​)
Research and development ​(24.6) (21.8​)
Depreciation and amortization ​(3.6) (3.9​)
Operating income 41.2 159.1
Other income −− −−
Earnings before interest and taxes​ (EBIT) 41.2 159.1
Interest income​ (expense) ​(25.1) ​(15.3​)
Pretax income 16.1 143.8
Taxes ​(5.5) (50.33​)
Net income 10.6 93.47
Price per share $16 $15
Sharing outstanding​ (millions) 10.2 8.0
Stock options outstanding​ (millions) 0.3 0.2
​Stockholders' Equity 126.6 63.6
Total Liabilities and​ Stockholders' Equity 533.1 386.7
Refer to the income statement above. ​ Luther's operating margin for the year ending December​ 31, 2005 is closest​ to:_________.
A. 13.7413.74​%
B. 21.9921.99​%
C. 27.4927.49​%
D. 32.9932.99​%