Identify correct statements

A)  $\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_3 \text{and }\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_2\cdot {\mathrm{H}}_2\mathrm{O}$ are hydrate isomers

B)  ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\mathrm{ONO}\right]}^{2+ }\text{and }{\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5{\mathrm{NO}}_2\right]}^{2+}$  are linakge isomers.

C) $\left[\mathrm{Pt}{\left({\mathrm{NH}}_3\right)}_4\right]\left[{\mathrm{PdCl}}_4\right]$  and  $\left[\mathrm{Pd}{\left({\mathrm{NH}}_3\right)}_4\right]\left[{\mathrm{PtCl}}_4\right]$   are ionization   isomers.