Identify the optically active compounds from the following:

${\left[\mathrm{Co}(\mathrm{en}{)}_3\right]}^{3+}$and $\mathrm{cis} -{\left[\mathrm{Co}(\mathrm{en}{)}_2{\mathrm{Cl}}_2\right]}^{+}$ are optically active compounds because it is capable of optical rotation.

Hence, options A and C are correct.