Anton is constructing an angle congruent to ∠PQR. With his straightedge, he draws and labels AB−→. He places the compass point on point Q and draws an arc that intersects QP−→− and QR−→−. He labels the point where the arc intersects QP−→− as point S and the point where the arc intersects QR−→− as point T. What should Anton do next?

With the same compass opening, place the compass point on point S and draw an arc through QR−→−.

Open the compass so that the compass point is on point Q and the pencil point on point P. Then place the compass point on point A and draw an arc through AB−→.

With the same compass opening, place the compass point on point A and draw a long arc through AB−→.

Open the compass so that the compass point is on point S and the pencil point on point T. Then place the compass point on point A and draw an arc through AB−→.