GKFix MCQ Question

What is the correct formula for dichloridobis(ethane-1,2-diamine)platinum(IV) nitrate?

• A. Pt(en)2Cl2NO3
• B. [Pt(en)2Cl2]NO3
• C. [Pt(en)2Cl2](NO3)2
• D. [Pt(en)Cl2]2NO3