Q 2458456304.     If `p = hat i + hat j, q = 4hat k-hat j` and `r = hat i + hat k`, then the unit vector in the direction of `3p + q- 2r` is

BCECE 2016 Stage 1
A

`1/3(hat i+2 hat j+2 hat k)`

B

`1/3(hat i-2 hat j-2 hat k)`

C

`1/3(hat i-2 hat j+2 hat k)`

D

`hat i-2 hat j+ 2 hat k`

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