I gotx a question about ranks

Regarding ranks and jutsu.
If you are taught a jutsu of a higher rank than your rank is allowed(Ex. Chuunin and A, Genin and B, etc.) can you use the jutsu?
I understand that creating your own jutsu of a higher rank you cant use it. But say, you are a genin trained under Naruto. Naruto teaches you Rasengan, can you use it in battle?

If you are taught the jutsu you can use it in battle yes

I think that it would become like a lart resort, but im not sure about how it works here.

I kind of agree with Itachi.

Sure, you could use it, but your character would have a pretty hard time doing it, and would probably blow alot of his chakra on it. It's kind of like their trump card.

* Nods head in agreement *