Logical Reasoning :: Matching Definitions - Discussion

Definition:
A Guarantee is a promise or assurance that attests to the quality of a product that is either (1) given in writing by the manufacturer or (2) given verbally by the person selling the product. Which situation below is the best example of a Guarantee?

Choices:
I. Melissa purchases a DVD player with the highest consumer ratings in its category.
II. The salesperson advises Curt to be sure that he buys an air conditioner with a guarantee.
III. The local auto body shop specializes in refurbishing and selling used cars.
IV. Lori buys a used digital camera from her coworker who says that she will refund Lori's money if the camera's performance is not of the highest quality.