GMAT Critical Reasoning (CR) | Re: Archaeologists believe a group of ancient tombs near the

Archaeologists believe a group of ancient tombs near the seaside town of Absuir, Egypt is home to the burial of the queen Cleopatra VII and her lover Mark Antony in the year 30 B.C. They base their judgment on the site's proximity to Alexandria and on the discovery of a partial mask showing a cleft chin reminiscent of Mark Antony, which, as is customary with burials of Egyptian rulers, would have been included with or near the mummified body at the time of the burial. Furthermore, _______________.

The passage has to complete with either a confirmation of the previous point of cleft chin or something else to substantiate the claim of tombs being that of two rulers in question.
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