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
The lymphatics of vulva: 
Select and explain. 
A. Do not freely communicate with each other, B. Do not cross the labiocrual fold, C. Transverse the labia from medial to lateral margin, D. Drain directly into the deep femoral glands
C: Transverse the labia from medial to lateral margin
Answer: C: Transverse the labia from medial to lateral margin 
Explanation: Lymphatic Drainage of Reproductive Tract:
Uterine Corpus –
1. Fundus-Para-aortic lymph nodes
2. Cornu-Superficial inguinal
3. Body-External Iliac L N
Cervix    1. Paramatrial
2. Internal iliac group
3. Obtruator group
4. External iliac group
5. Sacral

All these drain into common iliac and superior lumbar group

Fallopian tube and ovary-Superior lumbar group
Vagina - Upper 2/3-Like cervix
                  Lower 1/3-Inguinal and external iliac nodes
Vulva-    Superficial inguinal
                 Deep inguinal
                 External iliac