Answer:
The correct option is C.
Explanation:
It is given that the side length of square is b.
The length of all sides of a square are equal.
From the figure it is noticed that the center of the square is origin. It means half square lies above the x-axis and half is below the x-axis.
Similarly, half of the square lies lefts to the y-axis and half is right to the y axis.
It means the distance between x-coordinate of each vertex and origin is
. The distance between y-coordinate of each vertex from the origin is
.
Therefore the vertices are
.
Option C is correct.