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
Which of the following structure is not passed by Root of Mesentery? 
Select and explain. 
A. 2nd part of Duodenum, B. Right Ureter, C. Right gonadal vessels, D. Inferior Venacava
A: 2nd part of Duodenum
Answer: A: 2nd part of Duodenum 
Explanation: Structures passed by Root of Mesentery

3rd part of Duodenum
Right Ureter
Right gonadal vessels
Inferior Venacava
Aorta
Right psoas major muscle