If bara is perpendicular to barb and ba...

If `bara` is perpendicular to `barb and barc,|bara|=2,|barb|=3,|barc|=4` and the angle between `barb and barc` is `(2pi)/(3)`. then `[bara" "barb" " barc]` is equal to

A

`4sqrt3`

B

`6sqrt3`

C

`12sqrt3`

D

`18sqrt3`

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The correct Answer is:

C

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