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
Yoke muscle pair is 
Select and explain. 
A. Rt LR and Rt MR, B. Rt so and Lt Io, C. Rt LR and Lt MR, D. All the above
C: Rt LR and Lt MR
Answer: C: Rt LR and Lt MR 
Explanation: Right lateral rectus and left medial rectus.
Yolk muscles are pair of muscles one from eye which contracts simultaneously during version movement.