When you have an equation in vertex form, we can find the x value of the vertex by looking in the parenthesis. The opposite number as is being added to x is the x value. Since we are looking for -3, we are looking for a positive 3 in the parenthesis. This leaves us with just A and B.
On the outside, the constant is the y value of the vertex. Since we are looking for a positive 2, we know B is the correct choice.
