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The unit normal vector to the plane 2x -...

The unit normal vector to the plane 2x - y + 2z = 5 are …………..

A

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

B

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

C

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

D

`pm 1/3 (2hati - hatj + 2hatk)`

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