*7 In Nocoin, the central bank decides that it wants to keep the quantity of money constant. If the demand for money in Nocoin increases, what must the Bank of Nocoin do? a Explain whether it buys or sells bonds on the open market? b Explain how the Bank of Nocoin’s actions achieve its goal of a stable quantity of money. c What happens to the interest rate in Nocoin? Draw a graph to illustrate these changes in the Nocoin money market.