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

Let `veca=2hati=hatj+hatk, vecb=hati+2hatj-hatk and vecc=hati+hatj-2hatk` be three vectors . A vector in the pland of `vecb and vecc` whose projection on `veca` is of magnitude `sqrt((2/3))`is (A) `2hati+3hatj+3hatk` (B) `2hati+3hatj-3hatk` (C) `-2hati-hatj+5hatk` (D) `2hati+hatj+5hatk`

`-(2hati+3hatj-3hatk)`

`2hati-3hatj+6hatk`

`hati-hatj+2hatk`

`3hati+2hatj-hatk`

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