Which of the Following Is an Example of a Good

Multiple Choice

Which of the following is an example of a good with positive network externalities?

A) A high-end car that has a long waiting list of prospective buyers
B) A shaving cream that is sold along with a pair of free razor blades.
C) An online messaging service that only allows registered users to use the service
D) An all-you-can-eat buffet at a restaurant
E) A movie screening that requires customers to buy tickets to watch the movie