GKFix MCQ Question

Under what condition is the approximation ω_a >> ω_b valid in the context of beats?

• A. When ω₁ = ω₂
• B. When ω₁ >> ω₂
• C. When ω₁ and ω₂ are both very small
• D. When |ω₁ – ω₂| << ω₁, ω₂