OG11，verbalreview-SC一道语法题，请牛牛们进来讲讲。

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OG11，verbalreview-SC

116．Inuits of the Bering Sea were in isolation from contact with Europeans longer than Aleuts or Inuits of the Noah Pacific and northern Alaska
(A)  in isolation from contact with Europeans longer than
(B)  isolated from contact with Europeans longer than
(C)  in isolation from contact with Europeans longer than were
(D)  isolated from contact with Europeans longer than were?
(E)  in isolation and without contacts with Europeans longer than


请问这题的答案，究竟是inuits were isolated from contact with Europeans 与 inuits were isolated from contact with aleuts对比呢，还是inuits were isolated from contact with Europeans 与 Aleuts were isolated from contact with Europeans 对比？

如果是第二种，为什么were不放在整句话的句尾（即alaska 后面）?