If they say all these documents are mandatory then you can do is to convince them that a bank statement is the only thing you have and it should be enough to prove that your source of funds is from a legal source.
They don't ask for these three documents they only ask for one of them.
Please provide one of the following from the list below with all pages.
And OP you should directly contact to the support and you should give the exact reason. In this way they will tell you exactly what they want?
If you don't have that documents which they asking so you should tell them the reason and ask them the solution.
In my point of view they only can help you about this.
I don't have experience about that because I don't store my funds in exchanges.