Archaeologist: The fact that the ancient Egyptians and the Maya both

­Archaeologist: The fact that the ancient Egyptians and the Maya both built pyramids is often taken as evidence of a historical link between Old- and New-World civilizations that is earlier than any yet documented. But while these buildings are similar to each other, there are important differences in both design and function. The Egyptian pyramids were exclusively tombs for rulers, whereas the Mayan pyramids were used as temples. This shows conclusively that there was no such link between Old- and New-World civilizations.

Which one of the following most accurately describes a flaw in the archaeologist's argument?

(A) The argument equivocates with respect to the term "evidence."

(B) The argument appeals to emotion rather than to reason.

(C) The argument assumes the conclusion it is trying to prove.

(D) The argument incorrectly relies on words whose meanings are vague or imprecise.

(E) The argument presumes that no other evidence is relevant to the issue at hand.­