Which of the following is a sequence are geometric

So there's no attached file or any sequence, but a geometric sequence can be identified by the way that the terms change. The formula for a geometric sequence is tn= t1* r^(n-1)
If the difference between terms is obtained through multiplication, it is a geometric sequence. For example:
2, 10, 50, 250... is a geometric sequence. The change, r, is 5.
However, the sequence 3, 11, 19, 27 is not geometric, it is arithmetic because the change is obtained through subtraction.

Horizontal change or the change of x