Which one of the following statements is correct concerning the differences between preferred and common stock? Select one: a. If a firm misses a dividend payment to its preferred shareholders, then preferred shareholders can file the firm for bankruptcy. But common shareholders would not be able to do that if the firm misses a dividend payment. b. Common stock is considered a firm's equity, while preferred stock is considered a form of debt. c. Both common shareholders and preferred shareholders share the same right in case of firm liquidation. d. Common shareholders have first right of priority after creditors in liquidation. e. Common shareholders generally have more control over a firm than preferred shareholders