Selected financial data of Alexander Corporation for the year ended December 31, 2011, is presented below: Operating income ...................................... $900,000 Interest expense ...................................... (100,000) Income before income tax .............................. $800,000 Income tax expense .................................... (320,000) Net income ............................................ $480,000 Preferred stock dividends ............................. (200,000) Net income available to common stockholders ........... $280,000 Common stock dividends were $120,000. The times-interest-earned ratio is A) 2.8 to 1. B) 4.8 to 1. C) 6.0 to 1. D) 9.0 to 1. Please explain and show all work