Which of the following is NOT true of computer-assisted interviews?

Which of the following is NOT true of computer-assisted interviews?
 a. Some computer-assisted interviews are conducted by phone. A prerecorded message asks numerous interview questions, which the applicant answers by punching the proper digit on a touch-tone pad. c. Computer-assisted interviews usually include questions about your employment history, skills, education, and even your work ethic and personal traits.
  b. Many computer-assisted interviews are timed, and the computer will flag questions that took an unusually long time to answer. d. Computer-assisted interviews are costly for the company and time-consuming for the job applicant.