How are countries' economies similar, even if they have access to different resources and are in different locations? O They all must answer the questions of what to produce and how to produce it based on the resources they have. O They all must produce a certain number of different products to have a successful economy. They all must achieve a certain ratio of goods produced compared to goods purchased to make their economies work. O They all use the same method or share the same beliefs when making decisions about what to manufacture.​