#Create the following data frame a$.$ use the UNITID as the row name; are you able to use

#SEGMENT$\_$ID as the row name? b$.$ Set the column SEGMENT$\_$ID as factor

#c$.$Check the class of the data frame

#UNITID SEGMENT$\_$ID MW PRICE

#AYER band$113524$

#SHUER band$123050$

#BUSHA band$110526$

#MINA band$19734$

#TEUA band$130074$