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If `A, B, C` are the vertices of a triangle whose position vectros are `vec a,vec b, vec c and G` is the centroid of the `DeltaABC,` then `overline(GA)+overline(GB)+overline(GC) =`

A

0

B

A+B+C

C

`(a + b + c )/(3)`

D

`(a - b - c ) /(3) `

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The correct Answer is:
a
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