can't remember the answer to a confidential question of the origin account

You can change your email address using the info here: http://help.ea.com/en/article/how-to-change-your-origin-account-s-email-address/

Please make contact with an EA Game Advisor for assistance with resetting your Security Question.

Click the following link to get started: http://help.ea.com/en/contact-us/new/?category=demo-beta

For help on how to contact an Advisor please use this link: http://answers.ea.com/t5/EA-Help-Beta/How-to-contact-a-Game-Advisor-using-the-new-EA-Help-page/td-p/2161281