I wish to change my challenge question that i registered with . How do i do this?

I have forgotten my challenge question that i used when i registered my yahoo E mail account. How do i find out what the question is.I wish to change my challenge question that i registered with . How do i do this?
Click 'forgot my password' and they'll ask the question and you have to remember the answer.I wish to change my challenge question that i registered with . How do i do this?
You cant find out, only U know the challenge Q .......... Yahoo will not share that info with anyone not even the person that owns the challenge Q. Plus to change the Challenge Q you must know what it is be4 you change it