Which of the Following Statements About the Complex Ion Co(en)₂Cl₂⁺

Multiple Choice

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

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