Natalie is completing a construction of an equilateral triangle inscribed in a circle as shown below. What should be the next step in her construction?

A circle is drawn with a radius marked.

A. Construct a line perpendicular to the line AB to create four congruent quadrants.

B. Construct six equal sections around the circle using the original radius as a guide.

C. Construct another point C anywhere on the circle to be the third vertex of her triangle.

D. Draw arcs above and below line AB to show where the triangle sides meet.