Three Long Wires Parallel to the X Axis Carry Currents $\mu$

Multiple Choice

Three long wires parallel to the x axis carry currents as shown.If I = 20 A,what is the magnitude of the magnetic field at the origin?

A) 37 $\mu$ T
B) 28 $\mu$ T
C) 19 $\mu$ T
D) 47 $\mu$ T
E) 58 $\mu$ T