Eva downloaded an audio file from a file$-$sharing website. The download contained a file that recorded her computer usage without her knowledge or consent. What should Eva do to remove the offending program, and prevent future attacks? a$.)$ Eva should upgrade her system to WPA encryption. b$.)$ Eva should run an anti$-$spyware program. c$.)$ Eva should change her method of user authentication. d$.)$ Eva should run an antivirus program.