I think maybe I wasn't specific enough, my sponsor is my mother whom I am currently living with. Me and the beneficiary moved back to the United States in April, filed in May and now received this RFE.
Did I misunderstand the meaning of I-864 and I-864A?
We have gathered that evidence, but are also considering just waiting until October when our sponsor will have her tax return transcript. That just seems like a very long time..
Thank you everyone for your responses.