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Force of magnitudes 3 and 4 units acting...

Force of magnitudes 3 and 4 units acting along `6 hati + 2hat j + 3hatk and 3hatj-2hatj+6hatk` respectively act on a particle and displace it from (2,2,-1) to (4,3,1) . The work done is

A

124/7

B

120/7

C

125/7

D

121/7

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The correct Answer is:
A
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