Every once in a while one comes across an anachronism, a chronological inconsistency that causes one to scratch one’s head.
Registering for CES is one of those.
The prefix is mandatory LOL.
Not only does CES force you to pick gender, they want to know if females are MARRIED!!!
I can’t think of any reason to even include it as a data field.
Dear CES, please re-think your registration process.