Locked out of yahoo account

Hello, I forgot my password and the recovery email address is no longer valid. I may be able to answer security questions but I am NOT getting that option. I have been to password helper dozens of time.I click the correct problem and then fill in email,prove I am not a robot and next am asked about alternate email. When I click on do not have access to this the next sceen says "sorry we cannot help you"! I am not given security questions option. Thanks!