Where would the circumcenter of a circle be found?

a.

The circumcenter of a circle is the center of a circle that is inscribed inside a triangle that contains angle bisectors.

c.

The circumcenter of a circle is the center of a circle that is inscribed inside a triangle that contains perpendicular bisectors.

b.

The circumcenter of a circle is the center of a circle that is circumscribed about a triangle that contains perpendicular bisectors.

d.

The circumcenter of a circle is the center of a circle that is circumscribed about a triangle that contains angle bisectors.