Match List I(coordination compounds) with List II(type of isomerism) and select the correct answer using the codes given below the lists:

	List I		List II
P)	${\left[Co{\left(N{H}_3\right)}_{4}C{l}_2\right]}^{+}$	1)	Optical isomerism
Q)	$cis-{\left[CoC{l}_2{\left(en\right)}_2\right]}^{+}$	2)	Ionization isomerism
R)	$\left[C{o}^{III}Cl\left(N{O}_2\right){\left(en\right)}_2\right]\left(SCN\right)$	3)	Coordination isomerism
S)	$\left[Co{\left(N{H}_3\right)}_6\right]\left[Co{\left(CN\right)}_6\right]$	4)	Geometrical isomerism