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Let alpha = a hati + b hatj + chatk , ve...

Let `alpha = a hati + b hatj + chatk , vecbeta = bhati + chatj + ahatk and vecgamma = chati + ahatj + bhatk` be three coplanar vectors with `a ne b and vecv = hati + hatj + hatk` . Then `vecv` is perpendicular to

A

`vecalpha+vecbeta`

B

`vecbeta+vecgamma`

C

`vecgamma+vecalpha`

D

`vecalpha+vecbeta+vecgamma`

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