GKFix MCQ Question

What is the IUPAC name for HC≡C-CH2-CH2-CH(CH3)2?

• A. 4-Methylhex-1-yne
• B. 5-Methylhex-1-yne
• C. 4,4-Dimethylhex-1-yne
• D. 5,5-Dimethylhex-1-yne