Instead of studying for an additional two hours for the economics final, Leann decides to watch a movie. Leann is making:___.

a. a rational decision if her marginal benefit from the movie is greater than her marginal cost.

b. an irrational decision because studying is more important than watching a movie.

c. a decision that is not on the margin because she will see the entire movie.

d. a decision based on stated preference, rather than revealed preference.

e. a rational decision if her marginal cost from the movie is greater than her marginal benefit.