Which of the following statements concerning preferred stock is most correct? a. Preferred stock generally has a higher component cost to the firm than does common stock. b. By law in most states, all preferred stock issues must be cumulative, meaning that the cumulative, compounded total of all unpaid preferred dividends must be paid before dividends can be paid on the firm's common stock. c. From the issuer's point of view, preferred stock is less risky than bonds. O d. Preferred stock, because of the current tax treatment of dividends, is bought mostly by individuals in high tax brackets. e. Unlike bonds, preferred stock cannot have a convertible feature