A Wall Street Journal article reports on Delta's recent investment in luggage tracking, switching to baggage tags with radio$-$frequency ID chips embedded. This will allow the airline to accurately track customers' baggage in real time. Even though the new technology costs a great deal, Delta could save on fewer luggage claims and deliveries. What does this example imply?

Companies could gain competitive advantage by providing better service.

Companies need to focus more on the total cost of ownership of investments instead of just one cost area.

Companies need to catch up with the newest technologies.

Customer service is everything, and companies need to provide the highest service level