16) A Wall Street Journal article titled \"Is the Future of the Sharing Economy Airbnbing Your Clothes?\" included the following statement about Why some expensive clothing and accessories brands are not available at a company that rents clothing and accessories to women: \"Many top designers, concerned about \"brand dilution,\" don't allow most or any of their products to be featured on Rent the Runway." This is an example of A) positive network externalities B) negative network externah'ties C) pecuniary externalities D) monopolistic competition