Jack is constructing the circumscribed circle of triangle abc with just a compass and a straightedge. which step should he take next in completing the construction? a)construct the perpendicular bisectors of ab and ac by drawing a line through e and f and another through g and h. b)construct the perpendicular bisector of bc in the same way as those of ab and ac. c)mark the point of intersection of the angle bisectors of a and c. d)draw three lines that pass through ab, bc, and ac, and label the point of intersection.