`PtCl_(4).6H_(2)O`can exist as hydrated complex `1` molal aq.solution has depression in freezing point of `3.72^(@)C`Assume `100%` ionisation and `K_(f)(H_(2)O=1.86^(@)mol^(-1))kg` then complex is
A. `[Pt(H_(2)O)_(6)]Cl_(4)`
B. `[Pt(H_(2)O)_(4)Cl_(2)]Cl_(2).2H_(2)O`
C. `[Pt(H_(2)O)_(3)Cl_(3)]Cl.3H_(2)O`
D. `[Pt(H_(2)O)_(2)Cl_(4)].4H_(2)O`