Given the following question:
We have the graph each option and make sure the graph intersects the following points:
(0,5) (0, -5), (5, 0), and (-5, 0)
As you can see the following graph intersects all the points given in the the question. Which means these graphs are exact. This is a graph of option B or "x2 + y2 = 5^2" which means this is your answer.