Which Nucleophilic Substitution Reaction Would Be Likely to Occur (Although $\to$

Which nucleophilic substitution reaction would be likely to occur (although probably not in excellent yield,due to competing elimination) ?

A) HO^- + CH₃CH₂CH₂CHICH₃ $\to$ CH₃ CH₂CH₂CHOHCH₃ + I^-
B) Cl^-+ CH₃CH₂CH₂CH₂-OH $\to$ CH₃CH₂CH₂CH₂-Cl + OH^-
C) CH₃S^- + CH₃CH₂CH₂-OCH₃ $\to$ CH₃S-CH₂CH₂CH₃ + OCH₃-^--
D) All of these choices are likely to occur.
E) None of these choices are likely to occur.