Zach and Cassidy are competitors in a market and each is trying to decide if it is worthwhile to advertise. If both of them advertise, each will earn a profit of $20, 000. If neither of them advertises, each will earn a profit of $30,000. If one advertises and the other doesn't, then the one who advertises will earn a profit of $40,000 and the other will earn $22,000. What is the Nash equilibrium in this game? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a Both of them should advertise. b Neither of them should advertise. c Cassidy should advertise and Zach should not advertise. d There is no unique Nash equilibrium for this game