Samples from a ceramic vase found at a tomb in Sicily prove that the vase was manufactured in Greece. Since the occupant of the tomb died during the reign of a Sicilian ruler who lived 2,700 years ago, the location of the vase indicates that there was trade between Sicily and Greece 2,700 years ago.
Which of the following is an assumption on which the argument depends
A．Sicilian potters who lived during the reign of the ruler did not produce work of the same level of quality as did Greek potters.
B．Sicilian clay that was used in the manufacture of pottery during the ruler’s reign bore little resemblance to Greek clay used to manufacture pottery at that time.
C．At the time that the occupant of the tomb was alive, there were ships capable of transporting large quantities of manufactured goods between Sicily and Greece.
D．The vase that was found at the Sicilian tomb was not placed there many generations later by descendants of the occupant of the tomb.
E．(E) The occupant of the tomb was not a member of the royal family to which the Sicilian ruler belonged.