Identify the major product C formed in the following reaction sequence:
\(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{I} \xrightarrow{\mathrm{NaCN}} \mathrm{A}\)
\(\xrightarrow[\text { Partial hydrolysis }]{\mathrm{OH}^{-}} \mathrm{B} \xrightarrow[\mathrm{Br}_2]{\mathrm{NaOH}} \underset{\text { (major) }}{\mathrm{C}}\)
1
propylamine
2
butylamine
3
butanamide
4
α–bromobutanoic acid