This post is deleted and closed because it's copy paste of copyrighted NBME question.
For more information read here
http://www.usmle-forums.com/site-news-announcements/8924-its-not-allowed-post-nbme-questions.html
For more information read here
http://www.usmle-forums.com/site-news-announcements/8924-its-not-allowed-post-nbme-questions.html