Coordination Compounds

Given below are two statements:

Statement I: $[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{3+}$ is a homoleptic complex whereas $[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_4\mathrm{C}{\mathrm{l}}_2{]}^{+}$ is a heteroleptic complex.

Statement II: The complex $[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{3+}$ has only one kind of ligand but $[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_4\mathrm{C}{\mathrm{l}}_2{]}^{+}$ has more than one kind of ligand.

In the light of the above statements, choose the correct answer from the options given below: