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A force vecF = (hati+hatj-hatk)N acts at...

A force `vecF = (hati+hatj-hatk)N` acts at a point P(3 m, 6 m, 9 m). The torque exerted by this force about a point Q(2 m, 7 m, 8 m) is

A

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

B

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

C

`(2hatj+2hatk)Nm`

D

`(-2hatj-2hatk)Nm`

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