The major product (A) formed in the following reaction sequence is:
Nitrobenzene $$\xrightarrow{(i) Sn, HCl}$$ $$\xrightarrow{(ii) Ac_2O, Pyridine}$$ $$\xrightarrow{(iii) Br_2, AcOH}$$ $$\xrightarrow{(iv) NaOH(aq)}$$ A

A

B

C

D