单项选择题

Questions 21 to 23 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.

In Bhutan, about 200 people ______.

A.have been killed in floods
B.have been killed in landslides
C.have drowned in the river
D.have been killed by diseases caused by floods