单项选择题

Questions 8 and 10 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each question. Now listen to the news. The hair samples used in experiment ______.

A.came from INS which keeps the samples
B.were offered by the emperor’s descendents
C.were offered by the emperor’s servants
D.were taken directly from the emperor’s body