This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Anatomy
The arrow indicating the anatomical identification of structure 
Select and explain. 
A. First ventricle, B. 2nd ventricle, C. 3rd ventricle, D. 4th ventricle
C: 3rd ventricle
Answer: C: 3rd ventricle 
Explanation: (C) 3rd ventricle