The coordination number and the oxidation state of the element ‘E’ in the complex $[\text{E}(\text{en}{)}_2({\text{C}}_2{\text{O}}_4)]{\text{NO}}_2$ (where ‘en’ is ethylenediamine) are, respectively:

1. A
   $6$ and $2$
2. B
   $4$ and $2$
3. C
   $4$ and $3$
4. D
   $6$ and $3$