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: Pathology
Which of the following statement is true about the mesenteric line? 
Select and explain. 
A. Seen in children who are immune to caries, B. Brown stains at cervical 3rd, C. Both 1 and 2, D. None
C: Both 1 and 2
Answer: C: Both 1 and 2 
Explanation: None