一个没讨论过的选项 GWD-4-1 谢谢

The Acoma and Hopi are probably the two oldest surviving Pueblo communities, both dating back at least a thousand years.

1. both dating
           
2. both of which have dated
           
3. and each has dated
           
4. and each one dating
5. each one of which date

请问各路牛人B错在哪？谢谢不吝赐教！！！

Thank you for your attention but I don't quite agree with you at this point.

In the first place, it is not rare to find:

     pl.noune, each/both of which...

In addition, other examples abound in GWD by using "have dated..."．

Again, sincere thanks for your prompt reply  

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