Clancy has plans to go to an opera and already has a $100 nonrefundable, nonexchangeable, and nontransferable ticket. Now Erin, whom Clancy has wanted to date for a long time, asks him to a party. Clancy would prefer to go to the party with Erin and forgo the opera, but he doesn't want to waste the $100 he spent on the opera ticket.1. Incorrectly allowed a sunk cost to influence his decision
2. Made a choice that was not optimal
3 Correctly ignored a sunk cost