David is performing the following construction.
An angle is created from points C, A, and B with vertex A. An arc is drawn from point A and intersects rays AC and AB. The intersection of the arc and ray AC creates point D. The intersection of the arc and ray AB creates point E. An arc is drawn from point B. The compass is kept the same width and an additional arc is drawn from point E that intersects the arc drawn from point D.
Based on the markings that are present, what construction is he performing?
Bisecting an angle
Bisecting a line segment
Copying an angle
Copying a line segment