Is the self$-$service checkout function consistent with Walmart's competitive strategy?

A$)$ No$,$ its basic function is to improve customer service by allowing the customer to check out their own groceries and have control of their bagging.

B$)$ Yes, its basic function is to improve customer service by allowing the customer to check out their own groceries and have control of their bagging.

C$)$ Yes, its basic function is to save cost by allowing one front$-$end employee to service multiple checkout lanes.

D$)$ No$,$ its basic function is to save