Office Depot knows that maintenance and repair services offered by the manufacturer are important to buyers of copy machines. If the copier does not function correctly, the Office Depot customer wants to be sure that it can be fixed or replaced at no extra charge and in a timely, convenient manner. In this case, the product can best be classified as $\_\_\_\_\_\_\_.$Office Depot knows that maintenance and repair services offered by the manufacturer are important to buyers of copy machines. If the copier does not function correctly, the Office Depot customer wants to be sure that it can be fixed or replaced at no extra charge and in a timely, convenient manner. In this case, the product can best be classified as $\_\_\_\_\_\_\_.$