Aduro Clean Technologies has the following share outstanding since their initial share offering: 31,000 shares of $3 cumulative preferred shares 60,000 common shares issued at $10 each The board of directors has declared the following dividends: 2017 none 2018 $50,000 2019 $80,000 2020 $150,000 2021 $260,000 Based on information provided, when did common shareholders receive their dividends? Question 56 options: 2021 2019 2020 After 2021