The data set Quarterly_Macro_US.dta contains multiple macroeconomic variables for the United States at a quarterly basis between 1963 and 2017. Develop an empirical strategy for explaining inflation based on the price index for personal consumption expenditures. Based on the sample period of 1963Q1 and 2017Q4, use your model to forecast inflation in the first quarter of 2018. Explain and justify your strategy carefully in the light of the underlying theory of Time Series Econometrics, then implement the strategy. Present tables with your results and discuss your findings