Arrange the following in increasing order of reactivity toward aqueous $\mathrm{NaOH}$ (nucleophilic aromatic substitution).

1. A1-chloro-4-nitrobenzene < chlorobenzene < 1-chloro-2,4-dinitrobenzene < 2-chloro-1,3,5-trinitrobenzene
2. Bchlorobenzene < 1-chloro-4-nitrobenzene < 1-chloro-2,4-dinitrobenzene < 2-chloro-1,3,5-trinitrobenzene
3. Cchlorobenzene < 1-chloro-2,4-dinitrobenzene < 1-chloro-4-nitrobenzene < 2-chloro-1,3,5-trinitrobenzene
4. D2-chloro-1,3,5-trinitrobenzene < 1-chloro-2,4-dinitrobenzene < 1-chloro-4-nitrobenzene < chlorobenzene