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: Ophthalmology
Which muscle is intoer of eye: 
Select and explain. 
A. Inferior oblique, B. Inferior rectus, C. Superior rectus, D. Medial rectus
C: Superior rectus
Answer: C: Superior rectus 
Explanation: C i.e. Superior rectus