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: Unknown
Inguinal L.node is found to be involved in a case of ovarian Ca. Revised FIGO staging would be ? 
Select and explain. 
A. Stage III A, B. Stage IV B, C. Stage III C, D. Stage IV A
B: Stage IV B
Answer: B: Stage IV B 
Explanation: Ans- B