Which of the following measures do police take to make use of the Internet to solve crimes
专四
已帮助 人
Which of the following measures do police take to make use of the Internet to solve crimes？
A．They use the search engines to find clues about cases.
B．They supervise the suspects" online activities.
C．They try to make friends with the suspects on the Internet.
D．They use the Internet to release emergency notice.
请帮忙给出正确答案和分析，谢谢！