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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

`overline(O)`

B

`3overline(GA)`

C

`3overline(GA)`

D

`3overline(GC)`

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The correct Answer is:
A
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