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

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

A) CH₃CH₂CH $\equiv$ CH₂ + Cl₂ (aq) $\rightarrow$
B) CH₃CH₂C $\equiv$ CH₃ + HCl $\rightarrow$
C) CH₃CH₂C $\equiv$ CH + HCl $\rightarrow$
D) CH₃CH₂C $\equiv$ CH + Cl₂ $\rightarrow$
E) None of the above