GKFix MCQ Question

What is the correct stability order for alkyl free radicals?

• A. Tert-butyl < Isopropyl < Ethyl < Methyl
• B. Ethyl < Methyl < Isopropyl < Tert-butyl
• C. Methyl < Ethyl < Isopropyl < Tert-butyl
• D. Isopropyl < Tert-butyl < Methyl < Ethyl