The correct order of reactivity of the following haloarenes towards nucleophilic substitution with aqueous NaOH is:

a) Chlorobenzene < Bromobenzene < Iodobenzene
b) Iodobenzene < Bromobenzene < Chlorobenzene
c) Chlorobenzene < Iodobenzene < Bromobenzene
d) Bromobenzene < Chlorobenzene < Iodobenzene