This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular motility and squint, Subject name: Ophthalmology
Secondary action of Superior Rectus Muscle is ? 
Select and explain. 
A. Abduction & extorsion, B. Adduction & extorsion, C. Adduction & intorsion, D. Abduction & intorsion
C: Adduction & intorsion
Answer: C: Adduction & intorsion 
Explanation: Actions of extraocular muscles : Muscle Primary Secondary Teiary action action action LR Abduction -- -- SR Elevation Intorsion Adduction IR Depression Extorsion Adduction SO Intorsion Depression Abduction IO Extorsion Elevation Abduction Ref;A.K.Khurana ; 6th edition; Page no:339