Best way to put 3 languages in a Wordpress Blog?

Hello everyone!

I need your help. I want to launch my blog soon, and I want it to be in 3 languages, english, french and portuguese. My articles are translated by hand, with no translator plugins or anything like it, they are real translations, made by me.
The problem is that I don't know how to do the separation of the languages.
Should I:

1. Make 3 subdomains like: eng.domain.com ; fr.domain.com ; pt.domain.com
   
2. Make 3 pastes like: domain.com/eng ; domain.com/fr ; domain.com/pt
   
3. Or filter the users in the process of signup to the language they choose? The problem of this one is that I would need them to signup in the first place. Or I could do a intro page with 3 buttons to choose which language and send them to one of the 2 first solutions that I posted?

Thanks!

 

Use No. 2. Subdomain will be good idea.

 

Sorry, but you say use option number 2 but you also think option 1?

By the way, in the first two options, is necessary that I install a wordpress blog for each language/subdomain/paste right?

 

also i want help about this

 

you can use translate.google script on your blog to change your main language to others... search on google how to create the code on your blog..