Match List I with List II.

	List I (Complex)	List II (Type of isomerism)
A	$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{NO}}_2\right)\right]{\mathrm{Cl}}_2$	I) Solvate isomerism
B	$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{SO}}_4\right)\right]\mathrm{Br}$	II) Linkage isomerism
C	$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right] \left[\mathrm{Cr}(\mathrm{CN}{)}_6\right]$	III) Ionization isomerism
D	$\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_3$	IV) Coordination isomerism

Choose the correct answer from the options given below.

	A	B	C	D
1	I	IV	III	II
2	II	IV	III	I
3	II	III	IV	I
4	I	III	IV	I