GKFix MCQ Question

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

• A. 4-Ethylhept-1-yne
• B. 5-Ethylhept-1-yne
• C. 6-Ethylhept-1-yne
• D. 5-Ethylhex-1-yne