If you wanted to create a vertical bar plot of the variable DriveTrain in the sashelp.cars data set, which code below could be appropriate? Select one: O a. PROC FREQ DATA = sashelp.cars; VBAR Drive Train; RUN; O b. PROC UNIVARIATE DATA = sashelp.cars; BARPLOT Drive Train; RUN; O c. PROC SGPLOT DATA = sashelp.cars; VBOX Drive Train; RUN; O d. PROC SGPLOT DATA = sashelp.cars; BARPLOT Drive Train; RUN; O e. PROC SGPLOT DATA = sashelp.cars; VBAR Drive Train; RUN