GKFix MCQ Question

What is the relationship between the speed of electromagnetic waves and the constants ε₀ and μ₀?

• A. c = μ₀ + ε₀
• B. c = μ₀/ε₀
• C. c = 1/√(μ₀ε₀)
• D. c = √(μ₀/ε₀)