Select the reagent(s) required for the following transformation.
Nc1ccccc1
[tex]\longrightarrow[/tex]
Ic1ccccc1
a) [tex]\mathrm{Nal}[/tex]
b) (1) [tex]\mathrm{NaNO}_2, \mathrm{HCl}[/tex]; (2) [tex]\mathrm{NaI}[/tex]
c) (1) [tex]\mathrm{NaNO}_2, \mathrm{HCl}_{\text {; }}[/tex] (2) I I
d) [tex]I_2[/tex]
