A particle is acted upon by constant forces $$4\hat{i} + \hat{j} - 3\hat{k}$$ and $$3\hat{i} + \hat{j} - \hat{k}$$ which displace it from a point $$\hat{i} + 2\hat{j} + 3\hat{k}$$ to the point $$5\hat{i} + 4\hat{j} + \hat{k}$$. The work done in standard units by the forces is given by

A

$$40$$

B

$$30$$

C

$$25$$

D

$$15$$