单项选择题

Questions 23 to 25 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.
Some of those dead people did not have identification because

A.their families didn’t know they were dead
B.their families hadn’t contact with the local authority
C.they didn’t take any documents with them
D.their documents were lost in the sea