If \( xy \) and \( z0 \), then which of the following (V) is true? (a) \( x zy z \) (b) \( \frac...

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If \( xy \) and \( z0 \), then which of the following
(V) is true?
(a) \( x zy z \)
(b) \( \frac{x}{z}\frac{y}{z} \)
(c) Both (a) and (b)
(d) None of these
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