SAS studio code please help $(28$ points total$)$ The data on cost of living indices for a sample of world cities $($New York $=100)$ is contained in the file, CityCosts.txt$.$ It includes the following variables: City, Country, CostLiving $($cost of living index$),$ Rent $($rent index$),$ Groceries $($grocery cost index$),$ Restaurant $($restaurant cost index$)$ and PurchasePower $($purchasing power index$).$ Complete the following:

$(12$ points$)$ Read the data set into SAS using the list style of input such that the full city and country names can be displayed. Print the first $15$ observations of the resulting data set.

$(8$ points$)$ Create a new data step based on a modification of the one used in $($a$)$ above. It should read the data as before but also include calculations. The first calculation should create a new variable called AverageCost which is the average of the values of Rent, Groceries, Restaurant, and PurchasePower. Create a second variable called Diff which is the difference between AverageCost and CostLiving $($AverageCost $-$ CostLiving $).$ Print just the variables AverageCost, CostLiving, and Diff for the first $12$ observations of the resulting data set.

$(8$ points$)$ Again, create a new data step based on a modification of the one used in $($a$)$ above. Include one calculation to create a new variable called WCost which is the weighted average $(65\%/35\%)$ of the values of Groceries and Restaurant $($i$.$e$.,0\mathrm{.}65*$ Groceries $+0\mathrm{.}35*$ Restaurant $).$ Create a second variable called Diff$2$ which is the difference between WCost and CostLiving $($WCost $-$ CostLiving $).$ Print just the variables WCost, CostLiving, and Diff$2$ for the first $12$ observations of the resulting data set.