Which of the following statements is correct?

(a) The product is o-bromotoluene

(b) Substitution is faster in the ring that is not deactivated by $-{\mathrm{NO}}_2$ . Thus, the compounds obtained will be

(c) In 2,4-dinitrotoluene, there are two deactivating (${\mathrm{NO}}_2$) groups and one activating (${\mathrm{CH}}_3$) group while in m-dinitrobenzene, there are only two deactivating groups

(d) 2,4-dinitrophenol contains a strongly activating group ($-\mathrm{OH}$ ) while 2,4 dinitrochlorobenzene contains weak deactivating group ($-\mathrm{Cl}$ ).