Hi,
On a small tree it is hard to say... But not the standard BT for me .
It could be a BT something, but not the simple BT - the leaves should be shorter and rounder in form especially on such a small tree.
I bought another BT this year that has almost the same leaves. But checking the batch, it seems to me that cats and dogs were sold in that batch and all labelled BT, where they were not even looking all the same.
I found it was funny, and for 7€, I bought one just for fun and see what comes out of the hat . I went later to buy a cat, because for 7€ ... what the hell !, and the sale was over ! Damn it !