Take it to the Apple Store and they will help you or you can go on their site and press "Forgot Apple ID." If you choose the second option you have to enter the first and last name, and the email you used for the iCloud on the iPad.
I don't think any answer would be correct, if you have an option "none of the above" then that would be the correct answer
Marla can enter Food for examble for A11 on the exl page