Ardor Company's net income last year was $500,000. The company has 150,000 shares of common stock and 30,000 shares of preferred stock outstanding. There was no change in the number of common or preferred shares outstanding during the year. The company declared and paid dividends last year of $1.00 per share on the common stock and $0.70 per share on the preferred stock. The earnings per share of common stock is closest to:

a. $3.33

b. $3.19

c. $2.33

d. $3.47