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If p,q,r are such that q-p = r-q = 2 for...

If p,q,r are such that q-p = r-q = 2 for every `p,q,r in I^+`, then the least possible value of (p+q)(q+r)(r+p) is :

A

192

B

720

C

129

D

data insufficient

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The correct Answer is:
A
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