You have just driven to the movie theatre, spent $20 on a ticket, and watched a 2-hour long movie. Which of the following is not an opportunity cost of this activity?

A) Somewhere else you could have driven to otherwise with the same amount of petrol.

B) What you could have done with $20 otherwise.

C) What you could have done with 2 hours of your time otherwise.

D) The $10 you also spent on popcorn and soda.