The People's Republic of China Has Had a Large Trade

Multiple Choice

The People's Republic of China has had a large trade surplus in recent years. Which of the following is the most likely explanation of this surplus?

A) China has a high rate of inflation, which reduces the value of its currency.
B) China has a large supply of labour, so low wages give it a competitive edge.
C) China has many trade barriers, which restrict the ability of other countries to sell their products in China.
D) China has a large amount of saving relative to domestic investment.