A Very Long Thin Wire Produces a Magnetic Field of

A very long thin wire produces a magnetic field of at a distance of from the central axis of the wire. What is the magnitude of the current in the wire? (μ₀ = 4π × 10^-7 T ∙ m/A)

A) 7.5 mA
B) 1.7 mA
C) 3300 mA
D) 24,000 mA