Which of the Following Could Be Used to Synthesize 2-Bromobutane $\equiv$

Which of the following could be used to synthesize 2-bromobutane?

A) CH₃CH₂CH $\equiv$ CH₂ + Br₂ (aq) $\rightarrow$
B) CH₃CH₂C $\equiv$ CH₃ + HBr $\rightarrow$
C) CH₃CH₂C $\equiv$ CH + HBr $\rightarrow$
D) CH₃CH₂C $\equiv$ CH + Br₂ $\rightarrow$
E) More than one of the above