One mole of the complex compound $Co(NH_3)_5Cl_3$, gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of $AgNO_3$ solution to yield two moles of $AgCl(s)$. The structure of the complex is :

Question

( A ) $[Co(NH_3)_4Cl]Cl_2.NH_3$
( B ) $[Co(NH_3)_4Cl_2]Cl.NH_3$
( C ) $[Co(NH_3)_5Cl]Cl_2$
( D ) $[Co(NH_3)_3Cl_2].2NH_3$