What is true about the variable model $2$ below?

DATA newcar;

SET sashelp.cars;

model$2=$ COUNTW$($model$)$;

RUN;

Hint: Recall the link to the list of commonly used SAS functions $.$ You may want to reference that URL what the COUNTW function does.

Select one:

a$.$ It contains the total number of cars of the same make and model

b$.$ It contains the number of characters in the model of the car

c$.$ It contains the number of words in the model of the car

d$.$ It contains the total number of cars of the same model