Which of the Following Statements Concerning the Complex Ion Co(en)₂Cl₂⁺ $\Delta$

Multiple Choice

Which of the following statements concerning the complex ion Co(en) ₂Cl₂⁺ is true? (en = ethylenediamine,NH₂CH₂CH₂NH₂) ?

A) The complex ion contains Co(I) .
B) The complex ion exhibits cis and trans geometrical isomers,but no optical isomers.
C) The complex ion exhibits two geometrical isomers (cis and trans) and two optical isomers.
D) Since en is a strong field ligand (large $\Delta$ ) ,the complex ion is paramagnetic.
E) The geometric isomers of the complex ion have identical chemical properties.