Shown below is information relating to the stockholders' equity of at 31 January, 2021: $ ? 8% cumulative preferred stock, $10 par, 100,000 shares authorized, 70,000 shares issued Common stock, $4 par, 500,000 shares authorized, 400,000 shares issued and outstanding Additional paid-in capital: preferred stock Additional paid-in capital: common stock Retained earnings $ ? $ 240,000 $ 1,900,000 $ 1,230,000 Dividends have been declared and paid for 2020. a) The average issue price per share of Grant's preferred stock was: b) The book value per share of common stock is: c) The balance in Retained Earnings at the beginning of the year was $770,000, and there were no dividends in arrears. Net income for 2020 was $1080,000. What was the amount of dividend declared on each share of common stock during 2020