Using two T-accounts (balance sheets listing assets and liabilities), one for the central bank and the other for a commercial bank (or the banking system as a whole), illustrate the changes in these accounts as a result of the following central bank operations: a. The central bank buys $100 value of government bonds from an insurance company with payment in cash. b. The central bank buys $100 value of government bonds from an insurance company with payment by a check drawn on itself. c. The central bank sells $200 value of government bonds to a commercial bank with payment in bank reserves. d. The central bank lowers the discount rate by a large percentage