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vec(a)|vec(b) and vec(c),|vec(a)|=2,|vec...

`vec(a)_|_vec(b) and vec(c),|vec(a)|=2,|vec(b)|=3,|vec( c )|=4`. The angle between `vec(b)` and `vec( c )` is `(2pi)/(3)` then `|[vec(a) vec(b) vec( c )]|`= …………

A

`4sqrt(3)`

B

`6sqrt(3)``

C

`12sqrt(3)`

D

`18sqrt(3)`

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