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If vecA,vecB,vecC are three vectors resp...

If `vecA,vecB,vecC` are three vectors respectively given by `2hati+hatk, hati+hatj+hatk and 4hati-3hatj+7hatk, ` then the vector `vecR` which satisfies the relations `vecRxxvecB=vecCxxvecB and vecR.vecA=0` is (A) `2hati-8hatj+2hatk` (B) `hati-4hatj+2hatk` (C) `-hati-8hatj+2hatk` (D) none of these

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