单项选择题

Questions 7 and 8 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.
Under US terrorism laws, doctors ______ can be prosecuted.

A. who are forced to treat the wounds of terrorists
B. who treat the wounds of terrorists willingly
C. who treat the wounds of terrorists involuntarily
D. who treat the wounds of terrorists for free