Please help with the following

What primary function is money serving when you keep it in a bank account until you need it to purchase a product? Select one: O a. A store of value O b. A unit of account O c. A medium of exchange O d. A double coincidence of wants Currency and checkable deposits are: Select one: O a. debts of the Federal Reserve Banks or of financial institutions. O b. redeemable for gold and silver from the Federal Reserve System. O c. of intrinsic value that determines the relative worth of money. O d. the major components of the M, definition of the money supply