Which of the Following Is True with Regard to the Costs

Which of the following is true with regard to the costs of subsidization?

A) Subsidization in the form of high feed-in tariffs lowers electricity prices.
B) U.S. consumers had benefited from the cost-efficient location of production in China even though it meant the loss of high-paying jobs in the United States.
C) The demand-side subsidies increased the negative externalities from emissions.
D) Renewable energy production such as solar and wind power was cost competitive and hence was not dependent on subsidies.