China took the lead in the production of solar panels primarily because ________.
A. labor costs in China were very low relative to that in Europe and the United States
B. the domestic demand for solar panels fell sharply
C. the price of pure silicon rose dramatically as supply caught up with demand
D. demand-side subsidization was not implemented in the United States
Answer:A
China took the lead in the production of solar panels primarily because ________.
A. labor costs in China were very low relative to that in Europe and the United States B. the domestic demand for solar panels fell sharply C. the price of pure silicon rose dramatically as supply caught up with demand D. demand-side subsidization was not implemented in the United States