Dividend yield is most often computed for common stock a. because the preferred stock market price per share is always lower than common stock, causing an inflated dividend yield. b. because common stock dividends are always lower than preferred stock dividends and present the most conservative estimates of dividend yield. c. because the cash dividends paid on common stock normally vary with the profitability of the corporation. d. because the preferred stock dividends vary with the profitability of the corporation. Comprehensive income is a. also referred to as total owner changes in equity. b. reported on the balance sheet. c. defined as all changes in stockholders' equity during a period. O d. defined as all changes in stockholders' equity during a period, except those resulting from dividends and stockholders' investments