Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the conversation.
Which of the following about coffee farming is NOT true
A．Over 30,000,000 people live on coffee farming. B．It is controlled by 4 or 5 big companies. C．It is next only to oil in terms of economic importance. D．Coffee growers usually own 4 or 5 hectares of land.