If the statements in the passage are true, then which of the following must on the basis of them be true? A. There was a steady decline in the yearly revenues generated by the energy tax in Frieland. B. There was a steady decline in the total amount of energy consumed each year in Frieland. C. There was a steady increase in the use of renewable energy sources in Frieland. D. The revenues generated by the energy tax were used to promote the use of energy from renewable sources. E. The use of renewable energy sources in Frieland greatly increased relative to the use of nonrenewable energy sources.