A Hoop of Radius 1

A hoop of radius 1.0 m is placed in the first quadrant of an xy-coordinate system with its rim touching both the x-axis and the y-axis.What are the coordinates of its center of gravity?

A) (1.0,1.0) m
B) (0.7,0.7) m
C) (0.5,0.5) m
D) Since there is nothing at the center of the hoop,it has no center of gravity.