In early July, Colin Marks purchased a $81 ticket to the December 15 game of the Sarasota Shippers. Parking for the game was expected to cost approximately $33, and Marks would probably spend another $26 for a souvenir program and food. It is now December 14. The Shippers were having a miserable season and the temperature was expected to peak at 5 degrees on game day. Marks therefore decided to skip the game and took his wife to the movies, with tickets and dinner costing $63. The sunk cost associated with this decision situation is:

A. $18.

B. $63.

C. None of the answers is correct.

D. $140.

E. $81.