Gravel company reported net income of $4,500,000 in 2021. the weighted average number of common shares outstanding during 2021 was 200,000 shares. gravel paid $250,000 in dividends on preferred stock, which was convertible into 40,000 shares of common stock.How much is basic earnings per share for 2021?a. $21.25b. $22.50c. $18.75d. $17.71