Recall the Application about how the price of CO2 permits in the European Union is determined to answer the following question(s).Recall the Application. Which of the following factors has caused the decline in the price of CO2 allowances in the EU in 2011?
A. Industrial output increased.
B. The number of renewable energy sources increased.
C. The number of energy efficient appliances increased.
D. All of these are correct.
Answer: D
Economics
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