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: Anatomy
Infection/ inflammation of all of the following causes enlarged superficial inguinal lymph nodes except: 
Select and explain. 
A. Isthmus of uterine tube, B. Inferior pa of anal canal, C. Big toe, D. Penile urethra
D: Penile urethra
Answer: D: Penile urethra 
Explanation: D. i.e. Penile urethra Penile (spongy) urethra of male mostly drain to deep inguinal lymph nodes