GKFix MCQ Question

What is the permeability of free space μ₀?

• A. 8.854×10^-12 C²/N·m²
• B. 4π×10^-7 T·m/A
• C. 1.257×10^-6 Wb/A·m
• D. 5.670×10^-8 W/m²K⁴