Questions 8 to 10 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each question.
Now listen to the news. Heavily armed soldiers were stationed along major downtown streets ______.
A．to safeguard the demonstrators B．to prevent the demonstrators from marching ahead C．to protect President Augusto Pinochet D．to arrest members of the Chilean Human Rights Commission