a$)$ Use a $2-$month moving average on all the data and plot theaverages and the prices. b$)$ Use a $3-$month moving average and add the $3-$month plot tothe graph created in part $($a$).$c$)$ Which is better $($using the mean absolute deviation$)$: the$2-$month average or the $3-$month average? d$)$ Compute the forecasts for each month using exponentialsmoothing, with an initial forecast for January of $$1\mathrm{.}80.$ Use a$=\mathrm{.}1,$ then a $=\mathrm{.}3,$ and finally a $=\mathrm{.}5.$ Using MAD, which ais the best? Px