In the rectangular coordinate system, are the points \((r,s)\) and \((u,v)\) equidistant from the origin?

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In the rectangular coordinate system, are the points \((r,s)\) and \((u,v)\) equidistant from the origin?

\((1)\, r + s = 1\)
\((2)\, u = 1 - r\) and \(v = 1 - s\)

Answer: C

Source: GMAT Prep
Source: — Data Sufficiency |