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
The actions of superior oblique muscle is A/E: 
Select and explain. 
A. Abduction, B. Intorsion, C. Extorsion, D. Depression
C: Extorsion
Answer: C: Extorsion 
Explanation: C i.e., Extorsion