select the correst answer based on the construction shown, what is the next step when bisecting line segment AB useing string A. useing a straightedge, draw a line perpendicular to segment AB so it crosses the arc in two places B. keep the string length and draw an arc centered at the point B that crosses the other arc in two places C. set the string length at point A and at the top of the arc. D. set the string length between point a and where the arc crosses segment AB.​