Many Middle Eastern countries depend on oil as their main source of income. This is a problem because __________. A. oil production does not provide much money, and the region is poor B. oil is a nonrenewable resource that may run out in the future C. the region is rich in farmland and should be focusing on agriculture D. there is not a demand for oil, and no countries want to purchase it Please select the best answer from the choices provided A B C D