One mole of complex compound `Co(NH_3)_5Cl_3` gives 3 moles of ions on dissolution in water. One mole of same complex reacts with two moles of `AgNO_3` to yield two moles of `AgCl(s)`. The complex is:
A. `[Co(NH_(3))_(4)Cl]Cl_(2).NH_(3)`
B. `[Co(NH_(3))_(5)Cl]Cl_(2)`
C. `[Co(NH_(3))_(3)Cl_(3)]2.NH_(3)`
D. `[Co(NH_(3))_(4)Cl_(2)]Cl.NH_(3)`