If your account number is 1010001231234 which of the following is your member number?

Your account number and member number is the same, so it is 1010001231234

There is no such thing as a member number

Your member number is the last 7 or 8 digits after the 000 in your Account number, so in this case it is 1231234

It can be any number, so it can be 9999