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If the constant forces 2hati-5hatj+6hatk...

If the constant forces `2hati-5hatj+6hatkand-hati+2hatj-hatk` act on a particle due to which it is displaced from a point A (4,-3,-2) to a point B(6,1,-3) , then the work done by the forces is a)10 unit b)`-10` unit c)9 unit d)None of these

A

10 unit

B

`-10` unit

C

9 unit

D

None of these

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