Chile and Ecuador are trading. Both countries have the same amount of resources and can produce fish and/or melons. The table below shows the maximum number of units of fish or melons that can be produced by each count. Assume constant opportunity cost in both countries

What is the tychonic system? a. a model of the solar system in which all the planets (including earth) orbit the sun b. a model of the solar system in which the planets, moon, and sun orbit earth c. a model of the solar system where the planets orbit the sun, and this system orbits earth d. a model where all the planets and earth are fixed in space and only the sun and moon move e. a model that expands the system to a vast number of galaxies and star systems