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 20 seconds to answer the questions.
Now listen to the news.
Why is Multiple Sclerosis one of the most frustrating conditions

A. Because we don’t know what causes it or how to cure it.
B. Because many people are in this condition.
C. Because people pay little attention to it.
D. Because we need more money for the research.