Dubious (which is; which was; which has been)

[SkiIucK]

Hey, guys! Long time - no see 8)
Could you please tell me which one of the following is correct and why:

Would you have considered it fair, if I had posted a thread with an english title, which is composed in German?

Would you have considered it fair, if I had posted a thread with an english title, which was composed in German?

Would you have considered it fair, if I had posted a thread with an english title, which has been composed in German?

Of course, in my opinion, this would be the best way to say it:
Would you have considered it fair, if I had posted a thread with an english title, composed in German?

Thank you for your attention!

[Diverhank]

I agree with your opinion. I know it was not part of your question, but..."an english title, composed in German"...how could it be both? It makes no sense to me...did you mean the content of the thread was in German even though it had an English title?

[SkiIucK]

I meant the content was in German. :)