Buyona wishes to purchase a used widget. She goes to Sellena, the local widget dealer. Sellena offers a used widget to Buyona for the price of $750. Buyona states that she only has $500. Sellena states that, if she were to sell the widget for only $500, or any amount less than $750, then she could not provide any warranty as to its merchantability, fitness for any particular purpose or any other warranty. Buyona then states that she will pay $750 for the widget. Since she only had $500 on her, she paid Sellena the $500, took the widget with her, and agreed to return shortly with the remaining $250. Prior to returning with the $250, though, Buyona attempts to use the widget but discovers that it fails to work properly. When Buyona attempts to return the widget, Sellena refuses it, claiming that since she never received the additional $250, the widget had no warranty. If you are on either Learning Team A or C, present the argument which Buyona may use in regard to the widget being covered by all applicable UCC warranties. If you are on either Learning Team B or D, present Sellena's argument as to why no such UCC warranties cover the sale of the widget.