The following partial information is taken from the comparative balance sheet of Whalen Company: 12/31/2020 and Shareholders' equity 12/31/2021 Common stock, $5 par; 26 million shares authorized; 21 million shares issued and 17 million shares outstanding at 12/31/2021; _million shares issued and shares outstanding at 12/31/2020. $105 million Additional paid-in capital on common stock 526 million Retained earnings 203 million Treasury common stock, at cost, 4 million shares at 12/31/2021 and 2 million shares at 12/31/2020 (78 million) Total shareholders' equity $756 million $ 85 million 398 million 163 million (56 million) $590 million How many of Whalen's common shares were outstanding on 12/31/2020? Multiple Choice 17 million. 15 million, None of these answer choices are correct. O 22 million