If \( \vec{F} = 4 \hat{i} + 3 \hat{j} + \hat{k} \) is the force and \( \vec{S} = \hat{i} + 2 \hat{j} + 5 \hat{k} \) is the displacement, then what is the amount of work?

A 15 unit

B 12 unit

C 10 unit