The vector veca=1/4(2hati-2hatj+hatk) (A...

The vector `veca=1/4(2hati-2hatj+hatk)` (A) is a unit vector (B) makes an angle of `pi/3` with the vector `(hati+1/2 hatj-hatk)` (C) is parallel to the vector `7/4hati-7/4hatj+7/8hatk` (D) none of these

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