Statement-1 : In $\left[\mathrm{Co}{\left(\mathrm{en}\right)}_3\right]{\mathrm{Cl}}_3,$the coordination number of ${\mathrm{Co}}^{3+}$ ion is $3.$

Statement-2 : $\text{'}\mathrm{en}\text{'}$ is a bidentate ligand.

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

Statement-1 is true, statement-2 is false.

Statement-1 is false, statement-2 is true.