Select the correct option (s) for the coordination compounds and their respectively isomeric forms.

Explanation

(A-p,q,r),(B-q,r,s),(C-p,q,r,s,)(D-p,q )

(A) `overset(III)([Co(en)_(2)NH_(3)Cl]^(2+)SO_(4)^(2-)`
and `[Co(en)_(2)(NH_(3))(SO_(4))]^(+)Cl^(-)` ionisation isomerism.
Note: trans-from has a centre of symmetry and several planes od symmetry but the cis-from has neither.
(B) Has total 10 isomeric froms including linkage (`NO_(2)` a,bodemtat ligand) ionisation (exchange of `NO_(2)^(-)` and `NO_(3)^(-)`), geometrical isomer (cis-and trans-) Compound is optically inactive as cis-as well as trans-forms possess at least one plane of symmetry.
(C) Exchange of `NO_(2)^(-)` and `Cl^(-)` gives rise to ionisation isomerism. Linkage through either O- and N- gives rise to linkage isomerism.