<prompt> Translate the following text to EnglishIkiwa chaguo hili litatumiwa, GAO itatuma barua kwa mwombaji wa awali na kila mwombaji mwenza akirekodi makubaliano haya.  <response>: If this option is exercised, GAO will send a letter to the original requester and each co-requester documenting this agreement. 