Did anyone use bank letter from officer as asset?

[Nursingchick17 4]

I received an RFE about income. It was $10700 less than it should be. If you sent bank account as an asset what did it look like for you? I see on the RFE it gives you the option to send 12 m bank statements or a letter from a bank official (I sent the letter from the bank official) if you have done this to prove assets, what did it look like?  I have a feeling my case will be denied because I didn’t chose the first option. But I am just wondering if anyone took that route.. at this point I am just waiting for a response. Reading feed on this website realizing I made a huge mistake and waiting for my inevitable fate 😕 thanks for any answers. 

[Nursingchick17 4]

Just an update for anybody in the future that searches this question. I did get an update today that said ready to schedule for interview. I sent (as assets) a bank letter that said the average 12 m, current balance, date opened, account number, signed by officer of bank and his number address or both him and joint sponsor. And also tax transcripts (self employed joint sponsor). Hope this helps others in the future. Good luck. 

Received i485- December 2nd 

RFE- February 20th 

biometrics- March 2nd 

RFE received- April 2nd 

ready to schedule for interview- may 6th