An art student decides to use a geometric construction to find the center of a circle. She first draws a chord. Which of the following should she do next in order to find the center of the circle in the fewest steps?

A. Construct a perpendicular bisector of the chord.
B. Construct a line parallel to the chord.
C. Construct a second chord perpendicular to the first, starting where the first chord intersects the circle.
D. Construct an equilateral triangle inscribed in the circle using the chord as the base.