which theorem explains why the circumcenter is equidistant from the vertices of a triangle? A.Vertical Angles TheoremB.Concurrency of Perpendicular Bisectors TheoremC.Concurrency of Angle Bisector TheoremD.Alternate Interior Angles Theorem

The concurrency of perpendicular bisector theorem explains how all radii of a circle are the same, so from the circumcenter of the circle the vertices of the triangle would also all be the same.