Design Build and Modify Container Images

[Rasputin2]

This may be a stupid question, but how would we, as exam takers, know to save the ckad:pluralsight image in ./App folder and the ckad:ps1 and ckad:ps2 in the ./App2 folder? Like what is it in the question or our general knowledge we are supposed to have to know which image goes where??? Sorry if this is a stupid question, but I just don't see why I would know which image goes where.