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Let veca=hati-2hatj+hatkand vecb=hati-ha...

Let `veca=hati-2hatj+hatkand vecb=hati-hatj+hatk` be two vectors. If `vecc` is a vector such that `vecbxxvecc=vecbxxveca and vecc*veca=0,` theat `vecc*vecb` is equal to:

A

`1/2`

B

`-3/2`

C

`-1`

D

`-1/2`

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