CEMC Fermat, 2004

Algebra Difficulty 2.0 Junior Find the answer Canada

Point $R$ is the midpoint of the line segment $PQ$ and $S$ is the midpoint of the line segment $QR$ . If $P$ has coordinates $(2,1)$ and $S$ has coordinates $(14,7)$ , then the coordinates of $Q$ are

(A) $(8,4)$ (B) $(26,13)$ (C) $(10,5)$ (D) $(18,9)$ (E) $(16,11)$

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