单项选择题

Questions 25 to 27 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now, listen to the news.
According to the news report, which of the following is true

A.The vaccine costs one million to develop.
B.Malaria cannot be treated.
C.Malaria causes one million deaths each year.
D.Malaria vaccine does not exist.