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The economyr of Hope Republic is currently in an economic crisis which has negatively affected aggregate demand and economic growth. The Reserve Bank of Hope Republic has gradually reduced the policy rate from 5% to 0% {zero per cent) to stimulate aggragate demand and restore economic growth. Although the reduction in the interest rate achieved some success, it was not enough to take the economy out of the crisis. As an economic student, what will be your response to the following questions the central bank seeks answers to? A. Should the Reserve Bank of Hope Republic further reduce the policy rate to a negative rate? Briefly explain your answer. \"a. B. Drawing lessons from the 2007 US financial crisis, indicate and briefly explain how the central bank could stimulate aggregate demand when the interest rate is stuck at zero.\" "l