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 is a complete sulcus 
Select and explain. 
A. Central sulcus, B. Paracentral sulcus, C. Collateral sulcus, D. Post calcarine sulcus
C: Collateral sulcus
Answer: C: Collateral sulcus 
Explanation: Collateral sulcus and calcarine sulcus are complete sulcus