The hydrolysis reaction that takes place at the slowest rate, among the following, is -
1
H2C = CH − CH2Cl \(\stackrel{\text {aq.} NaOH}{\longrightarrow}\) H2C = CH − CH2OH
2
3
4
H3C − CH2 − Cl \(\stackrel{\text {aq.} NaOH}{\longrightarrow}\) H3C − CH2 − OH