Naming URL patterns‎ for a forum [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 11 years ago.

I am creating a web forum, which of the following URL pattern you preferred and why?

A.

Group pages: http://forum.example.com/groups/computer
Post pages: http://forum.example.com/groups/computer/posts/123

B.

Group pages: http://forum.example.com/groups/computer
Post pages: http://forum.example.com/groups/computer/123

C.

Group pages: http://forum.example.com/computer
Post pages: http:/开发者_JS百科/forum.example.com/computer/123

Thanks for your opinion.

---

Definitely the C What does the computer folder stands for?

---

I prefer the option B, because each element of the url has a explicite name, it's better for your SEO. And you have very good keys words in your url.

Seb