Companies can issue different classes of common stock. Which of the following statements concerning stock classes is CORRECT? a. The classes are: common shares, fo unders shares, and preferred shares. b. All common stocks, regardless of cla ss, must have the same voting rights. c. All firms have several classes of common stock. d. All common stock, regardless of class, must pay the same dividend. e. Some class or classes of common stoc k are entitled to more votes per share than other classes.