Which circle shows Arc A B that measures 60°?

Circle O is shown. Line segments A and B are shown. The angle between the 2 segments is 60 degrees.
Circle O is shown. Line segment A is a tangent and line segment B is a secant. The angle between lines A and B is 60 degrees.
Circle O is shown. Line segments A O and B O are radii. Angle A O B is 60 degrees.
Circle O is shown. Line segment A Y is a secant. Line Y B is a diameter. Angle A Y B is 60 degrees.