Inferno Fire Blast and attacking

[Azatoth]

Pretty simple question, just a stupid point of time at which I asked myself this question (when doing a review of Inferno Fire Blast ):

Inferno Fire Blast reads:

Select 1 face-up "Red-Eyes B. Dragon" on your side of the field to activate this card. Inflict damage to your opponent's Life Points equal to the original ATK of the selected "Red-Eyes B. Dragon". "Red-Eyes B. Dragon" cannot attack during the turn you use this card.

Some rulings are:

1. No copies of "Red-Eyes B. Dragon" can attack if you activate "Inferno Fire Blast". (This is about attacking after activation)
2. If "Red-Eyes B. Dragon" attacked, you cannot activate "Inferno Fire Blast" during Main Phase 2, but if "Red-Eyes B. Dragon" did not attack, you can activate "Inferno Fire Blast" during Main Phase 2. (This is about having attacked with one REBD before activation)

Question: if you attacked with one REBD, could you use Inferno Fire Blast on another REBD during Main Phase 2?

I would say no from what I conclude from the above rulings, and that it should read "If any "Red-Eyes B. Dragon" attacked, you cannot activate [...]", but it just ain't a clear ruling about this in my eyes. Whadda'ya think?

 

[DarkPaladin2k1]

Based on the part that says "No copies" I will say that it can't be done even if the one you intend to activate it on didn't attack, if one attacked you're not allowed at all to activate IFB on any REBD

 

[Azatoth]

Just got the idea that

No copies of "Red-Eyes B. Dragon" can attack if you activate "Inferno Fire Blast".

mustn't be understood as "no REBD can attack after IFB has been activated" (as I originally understood) but "no REBD can attack the same turn IFB is activated", so this "question" is answered. Oh, why does the whole world have to speak English...