I can't remember my origin security answer...

I am Battle Field 3 player, and I am living in South Korea. When I saw my origin E-mail, it was culoftheduty@hanmail.net but, my real E-mail is culofduty@hanmai.net so  think I had mistake when I made my account. So if you see this message, please answer me how can I change security answer. For one's information my security question is 'what is your favorite food?'