A Straight Wire Is Bent into the Shape Shown $$\vec { B }$$

A straight wire is bent into the shape shown.Determine the net magnetic force on the wire when the current I travels in the direction shown in the magnetic field $$\vec { B }$$ .

A) 2IBL in the -z direction
B) 2IBL in the +z direction
C) 4IBL in the +z direction
D) 4IBL in the -z direction
E) zero