1. About quantitative easing (QE) implemented by the U.S. Fed, which of the following statements is (are) correct?
   0. 1. The Fed may perform QE by cutting the interest rate
      2. The Fed may perform QE by directly purchasing the government securities
      3. The Fed may perform QE by crediting huge amount of extra reserves to commercial banks in exchange for impaired loans from these banks
   1. Only i)
   2. Only ii)
   3. Only i) and iii)
   4. Only ii) and iii)