Which statements below are TRUE? (Choose one or more.) A Money is a widely accepted medium of exchange, and may also function as a store of value, a unit of account, and a standard of deferred payment. B Historically, the precious metals gold and silver became the most important commodity moneys. C Banks expand the supply of money by creating deposits in their customers' favor. D Fractional-reserve banking enables banks to expand the money supply by a multiple of their reserves. E 100-percent-reserve banking enables banks to expand the money supply by 100 percent of their reserves