GKFix MCQ Question

Which of the following complexes can show ionization isomerism with [Co(NH₃)₅Br]SO₄?

• A. [Co(NH₃)₅Cl]SO₄
• B. [Co(NH₃)₅(SO₄)]Br
• C. [Co(NH₃)₆]Br₂SO₄
• D. [Cr(NH₃)₆][Co(CN)₆]