Product Distribution of 1-Bromobutane with NaOH

The S_N2 and E2 reaction mechanisms are fundamental concepts in organic chemistry that describe nucleophilic substitutions and eliminations, respectively. To illustrate these mechanisms, consider the reaction of 1-bromobutane with sodium hydroxide (NaOH) in a polar aprotic solvent. The reaction can lead to two possible outcomes: substitution or elimination.

If 1-bromobutane undergoes an S_N2 reaction, a nucleophile attacks the substrate from the opposite side of the leaving group, leading to the formation of butanol. In contrast, if the reaction proceeds via an E2 mechanism, hydroxide acts as a base, abstracting a proton from a β-carbon, resulting in the formation of butene.

Given this context, determine which of the following statements about the reaction product distribution of 1-bromobutane with sodium hydroxide is true when the reaction conditions favor the S_N2 pathway.