A uniform force of (3 i + j ) newton acts on a particle of mass 2 kg. Hence the particle is displaced from position (2 i + k ) metre to position (4 i +3 j - k ) metre. The work done by the force on the particle is

1. A. 9 J
2. B. 6 J
3. C. 13 J
4. D. 15 J

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