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
Yolk muscle pair is: 
Select and explain. 
A. Rt MR and Rt LR, B. Rt MR and Lt LR, C. Rt SO and Lt TO, D. Rt SR and Lt SR
B: Rt MR and Lt LR
Answer: B: Rt MR and Lt LR 
Explanation: Ans. Rt MR and Lt LR