<prompt> Translate the following text to EnglishKumbuka, dakika chache zilizopita, nilipozungumza juu ya tofauti ya maoni ya Tume na Huduma ya Posta juu ya suala la jinsi gharama zinavyobadilika na kiasi?  <response>: Now, remember a few minutes ago when I talked about the Commission and Postal Service difference of opinion on the matter of how costs vary with volume? 