Answer:
So, C, and D.. can easily be marked incorrect. This is because in the question it asks, "Atleast 16" This leaves us with answer choice A and B. Answer choice (A), is a closed circle, while answer choice (B) is an open circle.
Closed circles include the number at the end point (less than/greater than/equal to), and open circles do not (less than greater than).
answer choice A. Closed circle, shifting to the right.