Which of the Following Is Not an Example of a Free

Multiple Choice

Which of the following is not an example of a free rider problem?

A) Sally listens to public radio but never contributes to her local station.
B) Fred benefits when the National Guard arrives to help create a flood wall around his town, but he is so poor that he pays no taxes.
C) Joe works with two other students on a group project for his intermediate microeconomics class. The grade is based on a group paper, but Joe goes to a movie instead of working on the paper because he knows that the other group members will write it without him.
D) John goes into his local corner shop and walks out with an apple without paying for it.