Assume that anna is consuming two goods, movies and books, and at her current level of consumption, the marginal utility of the last movie is 10 and the marginal utility of the last book is 5. the price of a movie is $12 and the price of a book is $4. in order to maximum her utility, what should anna do? a. increase her consumption of both movies and booksb. decrease her consumption of both movies and booksc. do nothing-she's maximizing her utilityd. decrease her consumption of movies and increase her consumption of bookse. increase her consumption of movies and decrease her consumption of books

"in the electricity industry, low average total costs are obtained only through large-scale production. in other words, the initial cost of setting up all the necessary wiring makes it risky and, most likely, unprofitable for competitors to enter the market. throughout much of the 20th century, many people viewed south africa’s de beers group as a monopoly because it controlled a large percentage of diamond production and sales. patents are granted to inventors of a product or process for a certain number of years. the reason for this is to encourage innovation in the economy. without the existence of patents, it is argued, research and development for improved electronics is unlikely to take place, since there’s nothing preventing another firm from stealing the idea, copying the product, and producing it without incurring the devel opment costs."which of the following best explains the barriers to entry that exist in this scenario? increasing returns to scale legal barriers exclusive ownership of a necessary resource