Consider the following system of preferences (recall that the preferences of the women appear in the lower right side of each cell (read vertically) and the preferences of the men appear on the upper left side (read horizontally)).
Check whether the following matchings are stable. Justify your answers.
(Chris - Anne, Alfredo - Betty, Dean - Claire, Ben - Donna),
(Chris - Anne, Alfredo - Betty, Ben - Claire, Dean - Donna)