Can WN2500RP extend a 2.4ghz into a dual band one

Hi

I have a 2.4ghz network that I want to extend with a WN2500RP (i havent bought it yet, but am about to).

Can I extend it, into a new 2.4/5ghz simultaneous network? If not, can I at least extend it in a 5ghz network only? Or do the WN2500RP only extend a network in a same band network as the original one, whatever this is?

thank you