A Concierge Company Performs Everyday Services Such as Walking the Dog

A concierge company performs everyday services such as walking the dog, picking up cleaning, waiting for the repairman, and going to the post office for people who are too busy to perform these tasks. The clients can evaluate the services provided

A) only before they are purchased.
B) in the same fashion as tangible goods.
C) more easily than evaluating tangible goods.
D) before, during, and after they are purchased or consumed.
E) only during consumption or after they are purchased.