GKFix MCQ Question

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

• A. 4-Methylhept-1-yne
• B. 5-Methylhept-1-yne
• C. 6-Methylhept-1-yne
• D. 5-Methylhex-1-yne