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If the origin is the centroid of a triangle ABC having vertices `A(a ,1,3),\ B(-2, b ,-5)a n d\ C(4,7, c)` , find the values of `a , b , cdot`

A

(2,2,8)

B

(-2,8,2)

C

(-2,-8,-2)

D

(-2,-8,2)

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