After Enjoying a Perfectly Delicious Meal,duane Treats Himself and Orders

Walter rents some ice time at the local hockey rink for 2 hours.After skating for an hour,he finds himself cold,tired,and hungry.If Walter decides to skate around for the other hour before leaving,it is likely because he: A) is ignoring the sunk cost of the rink time. B) is focusing on the sunk cost of the rink time. C) is weighing his opportunity costs of the second hour against the benefits of the second hour of skating. D) None of these is true.

Sandy is a big Star Wars fan and buys a $20 ticket a week in advance to the premier of the new movie.After arriving at the theater,she realizes she left the ticket at home and doesn't have time to return home and get it.Sandy can buy another ticket for $20.She decides not to because seeing the movie isn't worth $40 to her.This is an example of: A) rational behavior because she values the movie less than $40 B) irrational behavior because she really values the movie more than $40 C) irrational behavior because the initial $20 is a sunk cost. D) rational behavior because it is a commitment device to never forget a ticket at home again.