Which one of these formulas will correctly compute dividends per share $($DPS$)?$

DPS $=$ Common stock dividends paid$/$Number of shares of common stock outstanding

DPS Common and stock dividends paid$/2)/($Number of shares of common and preferred stock outstanding$/2)$

DPS $=$ Common and preferred stock dividends paid$/$Number of shares of common and preferred stock outstanding

DPS $=$ Preferred stock dividends paid$/$Number of shares of preferred stock outstanding