The statement that maps "show the various spots where Roman pottery of a particular type has been found tell only part of the story" makes the point that A. maps indicate where specific pottery styles have been found, but they do not indicate where these styles originated B. maps show the geographical spread of Roman pottery but not the people who had access to it C. maps do not usually include pottery styles found in the remotest regions the Roman Empire D. archaeologist studying Roman pottery need to use a range of techniques in their investigations