GKFix MCQ Question

What is the IUPAC name for HC≡C-CH2-CH2-CH(CH2CH3)-CH3?

• A. 3-Ethylhex-1-yne
• B. 4-Ethylhex-1-yne
• C. 5-Ethylhex-1-yne
• D. 4-Ethylpent-1-yne