On December 31, 2020, Clarkson Company had 100,000 shares of common stock outstanding and 30,000 shares of 7%, $50 par, cumulative preferred stock outstanding. On February 28, 2021, Clarkson purchased 24,000 shares of common stock on the open market as treasury stock paying $45 per share. Clarkson sold 6,000 of the treasury shares on September 30, 2021, for $47 per share. Net income for 2021 was $180,905. Also outstanding at December 31, 2020, were fully vested incentive stock options giving key executives the option to buy 50,000 common shares at $40. These stock options were exercised on November 1, 2021. The market price of the common shares averaged $50 during 2021.

a.) Determine the basic earnings per share for the year ended December 31, 2021. Show a labeled calculation for the denominator before calculating EPS.

b.) Determine the diluted earnings per share for the year ended December 31, 2021. Show a labeled calculation for the denominator before calculating EPS.