The unit vector parallel to the resultan...

The unit vector parallel to the resultant of the vectors A = 4i+3j + 6k and B = -i + 3j-8k is

A

`1/7(3hati + 6hatj - 2hatk)`

B

`1/7(3hati + 6hatj + 2hatk)`

C

`1/49(3hati + 6hatj - 2hatk)`

D

`1/49(3hati - 6hatj + 2hatk)`

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The correct Answer is:

A

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