The inflation rate would be 4 percent.In economics, the relationship between the growth rate of the money supply and inflation is characterized by the equation:MV = PQ,where M is the supply of money, V is the velocity of money, P is the price level, and Q is the economy's real output.Suppose the economy's real output grows at an average rate of 3 percent per year. And suppose there is a 7 percent average rate of growth in the money supply, and velocity is constant.If velocity remains constant, the relationship between changes in the money supply and changes in nominal GDP is direct. A 7% increase in the money supply results in a 7% increase in nominal GDP if velocity is stable. This would cause the price level to rise by about 4%, given a 3% increase in real GDP. Therefore, the inflation rate would be 4 percent.Option b: The inflation rate would be 4 percent.