Match Column-I (Co-ordination compounds) with Column-II (Type of isomerism) and select the correct answer using the codes given below the Columns :
 

S.No.	Column - I	S.No.	Column - II
A)	$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]$	p)	Optical isomerism
B)	$\text{ Cis- }\left[\mathrm{Co}(\text{ en }{)}_2{\mathrm{Cl}}_2\right]$	q)	Ionization isomerism
C)	$\left[\mathrm{Co}(\mathrm{en}{)}_2\left({\mathrm{NO}}_2\right)\mathrm{Cl}\right]\mathrm{SCN}$	r)	Co-ordination isomerism
D)	$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]\left[\mathrm{Cr}(\mathrm{CN}{)}_6\right]$	s)	Geometrical isomerism