Questions 27 and 28 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news.

Which of the following is TRUE about Cyanovirin

A．It is an active ingredient in a foam, cream or suppository.
B．It is an active ingredient applied before sex to prevent HIV transmission.
C．It is a protein that protects the body from infection by microorganisms.
D．It is a drag used to prevent HIV transmission.