Unidentified

Hello,

I've got a question,

I received a letter to ask us submitting a complete income tax return, but on the letter there's written 1040 in red ink

so I don't know what I should do. I've read your process, I am wondering if we can submit transcript or we need to 

apply the copy from IRS?

 Because it takes up to 75 days to get that. and I only have 87 days to submit the letter. 

Thank you very much.