This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
What is the FIGO staging of Carcinoma ovary with negative nodes, limited to true pelvis, microscopic implants on peritoneal surface? 
Select and explain. 
A. III A, B. III B, C. III C, D. None
A: III A
Answer: A: III A 
Explanation: III A REF: See APPENDIX-60 for details of "FIGO staging of Carcinoma ovary"