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
In ca ovary inguinal lymph nodes are involved in stage 
Select and explain. 
A. Stage II, B. Stage III a, C. Stage IIIc, D. Stage IVb
D: Stage IVb
Answer: D: Stage IVb 
Explanation: FIGO revised the staging of carcinoma ovary in January 2014 and according to the new staging inguinal LN involvement is stage IV b.