A force \( \vec{F} = 5 \hat{i} + 6 \hat{j} - 4 \hat{k} \) acting on a body, produces a displacement \( \vec{s} = 6 \vec{i} + 5 \vec{k} \). Work done by the force is :

1
\( 18 \) units
2
\( 15 \) units
3
\( 12 \) units
4
\( 10 \) units

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