Marvin Corporation has the following information reported on the balance sheet as of December 31 of the current year: Common Stock, $10 par value (authorized 20,000 shares) $40,000 Treasury Stock (1,000 shares) $30,000 Based on the information above, how many shares of common stock are outstanding? O A. 1,000 O B. 3,000 OC. 10,000 OD. 4,000