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If D ,\ E ,\ F are the mid points of the...

If `D ,\ E ,\ F` are the mid points of the side `B C ,\ C A` and `A B` respectively of a triangle ABC, write the value of ` vec A D+ vec B E+ vec C Fdot`

A

`overline(OA)`

B

`overline(AC)`

C

`overline(AF)`

D

`overline(O)`

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The correct Answer is:
D
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