Two Parallel Wires,separated by the Distance of 2 Cm,carry the Currents

Multiple Choice

Two parallel wires,separated by the distance of 2 cm,carry the currents I₁ = 1 A and I₂ = 2 A in the same direction.How far from the wire carrying the current I₁ is the magnetic field zero?

A) never 0
B) 1.00 cm
C) 0.667 cm
D) 3.00 cm
E) 2.00 cm