Given three points P, Q, R with P≡(5,3) and R lies on the x-axis. If equation of RQ is x−2y=2 and PQ is parallel to the x-axis, then the centroid of ΔPQR lies on the line:
A) 2x+y−9=0
B) x−2y+1=0
C) 5x−2y=0
D) 2x−5y=0