Joey is constructing the circumscribed circle for △RST. He has already used his compass and straightedge to complete the part of the construction shown in the figure.
What could be his next step?
Place the point of the compass on point R and draw an arc intersecting the two arcs X and Y.
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Place the point of the compass on point S and draw an arc intersecting the two arcs X and Y.
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Place the point of the compass on point T and draw an arc intersecting the two arcs X and Y.
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Place the point of the compass on point A and draw an arc intersecting the two arcs X and Y.