GKFix MCQ Question

What is the correct order of acidic strength for these alkynes: Ethyne, Propyne, But-2-yne?

• A. CH3–C≡CH > HC≡CH > CH3–C≡C–CH3
• B. CH3–C≡C–CH3 > CH3–C≡CH > HC≡CH
• C. HC≡CH > CH3–C≡CH >> CH3–C≡C–CH3
• D. HC≡CH < CH3–C≡CH < CH3–C≡C–CH3