【单选题】

In the last paragraph, by saying "I would like to lunatic-proof my life as much as possible", one of the researchers interviewed by Joanna Kempner is suggesting that______.
A．the personal life of the researchers might also be affected by their research.

B．he doesn't want his life to be affected by the people who are mad.
C．he would like the policeman to protect his life.
D．his life is always in danger.