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If vec(a) xx vec(b) xx vec(c ) and vec(b...

If `vec(a) xx vec(b) xx vec(c ) and vec(b) xx vec(c ) xx vec(a)`, then which one of the following is correct?

A

`vec(a), vec(b), vec(c )` are orthogonal in pairs and `|vec(a)|= |vec(c )| and |vec(b)|=1`

B

`vec(a), vec(b), vec(c )` are non-orthogonal to each other

C

`vec(a), vec(b), vec(c )` are orthogonal in pairs but `|vec(a)| ne |vec(c )|`

D

`vec(a), vec(b), vec(c )` are orthogonal in pairs but `|vec(b)| ne 1`

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The correct Answer is:
A
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