A body constrained to move along the Z-axis of a co-ordinate system is subjected to a constant force F = (-i + 2 j + 3 k) Newton

A body constrained to move along the Z-axis of a co-ordinate system is subjected to a constant force F = (-i + 2 j + 3 k) Newton. What is the work done by this force, in moving the body over a distance of 4 m along the Z-axis ?