In the \(xy\)-plane, the origin \(O\) is the midpoint of line segment \(PQ.\) If the coordinates of \(P\) are \((r,s),\)

[Vincen]

In the \(xy\)-plane, the origin \(O\) is the midpoint of line segment \(PQ.\) If the coordinates of \(P\) are \((r,s),\) what are the coordinates of \(Q?\)

A. \((r,s)\)
B. \((s,-r)\)
C. \((-s,-r)\)
D. \((-r,s)\)
E. \((-r,-s)\)

Answer: E

Source: Official Guide