The center of a circle is at the origin on a coordinate grid. The vertex of a parabola that opens upward is at (0, 9). If the circle intersects the parabola at the parabola’s vertex, which statement must be true?
A
The maximum number of solutions is one.B
The maximum number of solutions is three.C
The circle has a radius equal to 3.D
The circle has a radius less than 9.