Why do some experts recommend against using a career objective as the introductory statement on…

Why do some experts recommend against using a career objective as the introductory statement on your résumé?

a. It can limit your possibilities as a candidate, particularly if you want to be considered for a variety of positions.

 b. It shows that you’re selfish and thinking only about your own success. c. It shows that you’re unrealistic, since no one can plan a career that might last for 40 or 50 years. d. It helps focus you as a candidate in the minds of potential employers.