Benzene on reaction with conc. `HNO_(3)` in presence of conc. `H_(2)SO_(4)` followed by the treatment of `CI_(2)` in presence of `FeCI_(3)` followed by the treatment of `CI_(2)` in presence of `FeCI_(3)`, it gives :
A. 2-chloro-1-nitrobenzene
B. 3-chloro-1-nitrobenzene
C. 4-chloro-nitrobenzene
D. a maxture of 1-chloro and 4-chloro-1-nitrobenzene