A circle is inscribed with 3 lines. Point x is at the center of the circle. A vertical line goes through point x to point z on the edge of the circle. A horizontal line goes through point x to point y on the edge of the circle. A diagonal line goes through point x to point w on the edge of the circle. Which line segment is drawn in the figure?

Line segment Y Z
Line segment W Y
Line segment X Z
Line segment W Z