IUPAC name of `[Co(NH_3)_3(H_2O)_2Cl]Cl_2` is
A. (a) diaquachloridodiammine cobalt (III) chloride
B. (b) triamminediaquachlorido cobalt (III) chloride
C. (c) chlorodiamminediaqua cobalt (III) chloride
D. (d) diamminediaquachlorido cobalt (II) chloride
