5.

Which of the following(s) is/are the economic achievements of China after the economic reform and Open-Door Policy starting in 1979?

I. The average annual real GDP growth rate since the reform was around 10%.

II. China has overtaken Japan as the world's second-biggest economy in 2010 based on the market exchange rate.

III. In 2017, China's GDP reached 63% of the US level and 2.5 times of Japan's GDP.

IV.China became a member of the World Trade Organization on December 11, 2001.

Select one:

A.I only.

B.I, II and III,

C.I, II, III and IV.

D.I and II.