A resident’s sister gives her favorite nursing assistant a t…

A resident’s sister gives her favorite nursing assistant a thank you note with a gift card inside it.  She tells the nursing assistant that this is a small way of letting him know how much she appreciates his work.  The NA does not want to offend the family, and it happens to be a gift card to his favorite restaurant, so he decides to keep it.  Which of the following BEST describes how the nursing assistant should have responded?