Maxwell Is Fighting Several Computer Viruses That Have Infected His

Maxwell is fighting several computer viruses that have infected his company. He has started to keep a log of each virus so that he can implement preventative measures in the future.
-The last type of virus that Maxwell adds to his log is the ____ virus. This virus infects a computer's startup program so that the virus becomes active as soon as the computer starts up.

A) start
B) special
C) open
D) boot