If direction cosines of a vector of mag...

If direction cosines of a vector of magnitude 3 are `2/3 , - 9/3 , 2/3 and a gt 0 ` , then vector is _______

A

`2 hati + hatj + 2 hatk`

B

`2hati-hatj + 2 hatk`

C

`hati -2 hatj + 2 hatk`

D

`hati + 2 hatj + 2 hatk`

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The correct Answer is:

B

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