In 20X2, the corporate tax rate is 20% and a firm has net income of $1,200. Its capital structure consists of 400 common shares outstanding, 50 executive stock options issued on July 1, 20X2, with exercise prices of $30. In 20X2, the firm pays dividends of $3 per common share. The average stock price is $35 during the first half of the year; $45 during the second half of the year. What is the firm's diluted earnings per share for 20X2?