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If a=hati-2hatj-3hatk, b=2hati+hatj-k,c=...

If `a=hati-2hatj-3hatk, b=2hati+hatj-k,c=hati+3hatj-2hatk`, then `[(axxb)xx(bxxc)(bxxc)xx(cxxa)(cxxa)xx(axxb)]=`

A

160000

B

`-8000`

C

400

D

`-40`

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The correct Answer is:
A
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