Catbert is trying to decide if personality tests will help him identify those people least deserving ...

Catbert is trying to decide if personality tests will help him identify those people least deserving of promotion within the company. Which statement about the use of personality tests for employee selection and promotion is true?
 
  a. Some personality tests predict performance in some jobs, but not others.
  b. The U.S. federal government uses personality tests quite effectively for this purpose.
  c. Use of personality tests can lead to a group of super employees.
  d. Using personality tests always leads to correct predictions of job performance.