The synthesis of 3-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are

• A. BrCH2CH2CH2CH3 and CH2CH2C ? CH
• B. BrCH2CH 2CH2CH2CH3 and CH3CH2C ? CH
• C. BrCH2CH2CH2CH2CH3 and CH2C ? CH
• D. BrCH2CH2CH3 and CH3CH2CH2C ? CH