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Let vecu,vecv and vecw be vectors such t...

Let `vecu,vecv and vecw` be vectors such that `vecu+ vecv + vecw =0` if `|vecu|= 3, |vecv|=4 and |vecw|=5` then `vecu.vecv + vecv .vecw + vecw .vecu ` is

A

`-25`

B

`-27`

C

`28`

D

`25`

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A
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