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
What is the nerve supply to the skin around the umbilicus 
Select and explain. 
A. 10th thoracic ventral ramus, B. 11th thoracic ventral ramus, C. Subcostal nerve, D. Iliohypogastric nerve
A: 10th thoracic ventral ramus
Answer: A: 10th thoracic ventral ramus 
Explanation: None