Please help: I-485 RFE

I received a RFE for my I-485 application:

Please submit evidence of your authorization to be employed in the United States from September of 2009 through November 2010.

 

I think it's because of my H1-B expired on Sept. of 2009. 

I have used EAD since middle of 2008, and changed my job again last June.

Shall I send my old EAD or a copy of my old EAD?

Thank you