That's probably not the way you want to do it.
Think about it for a moment - will there ever be more than one user? If so, then you want to record each user with his answer, rather than record the correct answer in the same table.
I'm just guessing what you are doing, but given that you seem to be multiple choice, I would have a couple of tables:
Questions:
QuestionID INT or UID
QuestionDescription VARCHAR
Answer1 VARCHAR
Answer2 VARCHAR
Answer3 VARCHAR
Answer4 VARCHAR
CorrectAnswer INT
Answers
AnswerID INT or UID
QuestionID INT or UID
UserID INT or UID
UserAnswer INT
The IDs Would be either INT or UniqueID depending on what you prefer.
This way, you get the text that goes beside the radio button from the DB, and record the user results in a different table, cross referencing it to the question and the user that answered.