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Let a, b, c be unit vectors such that a+...

Let a, b, c be unit vectors such that a+b+c=0. Which one of the following is correct?

A

`veca xx vecb = vecb xx vecc = vecc xx veca=vec0`

B

`vecc xx vecb = vecb xx vecc = vecc xx veca ne vec0`

C

`vecb xx vecb = vecb xx vecc = veca xx vecc=vec0`

D

`veca xx vecb, vecb xx vecc,vecc xx veca` are mutually perpendicular

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The correct Answer is:
B
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