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Let veca=2hati+hatj-2hatk, vecb=hati+hat...

Let `veca=2hati+hatj-2hatk`, `vecb=hati+hatj`. If `vecc` is a vector such that `veca.vecc=|vecc|` and angle between vectors `vecaxxvecb and vecc` is `30^@` , then `|(vecaxxvecb)xxvecc|`is equal to

A

`3/2`

B

`2/3`

C

2

D

`sqrt(3)/2`

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