单项选择题

Questions 9 and 10 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions. Now listen to the news. Which of the following statements is TRUE

A.The new high security prison was put into use before the violence in Sao Paulo broke out.
B.The violence in Sao Paulo was under the command of one of the gang leaders who had been released recently.
C.The gang leaders were satisfied with the conditions in the new prisons.
D.Guards in prisons often help the prisoners to escap