Two Long Parallel Wires 45

Two long parallel wires 45.3 cm apart are carrying currents of 10.3 A and 29.8 A in the opposite direction.What is the magnitude of the magnetic field halfway between the wires?

A) 1.72 × 10^-5 T
B) 0.91 × 10^-5 T
C) 3.54 × 10^-5 T
D) 2.63 × 10^-5 T
E) ​1.77 × 10^-5 T