GKFix MCQ Question

What is the value of the permeability of free space μ₀?

• A. 8.85 × 10⁻¹² C²/N·m²
• B. 4π × 10⁻⁷ N/A²
• C. 3 × 10⁸ m/s
• D. 6.67 × 10⁻¹¹ N·m²/kg²