This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular Motility, Subject name: Ophthalmology
[{'content': 'Yoke muscle of right superior oblique is- \nSelect and explain. \nA. Left superior rectus, B. Left inferior rectus, C. Right superior rectus, D. Left lateral rectus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Left inferior rectus * Yoke muscles (contralateral synergists). It refers to the pair of muscles (one from each eye) which contract simultaneously during version movements. For example, right lateral rectus and left medial rectus act as yoke muscles for dextroversion movements. Other pair of yoke mscles are: right MR and left LR, right LR and Left MR, right SR and left JO, right IR and left SO, right SO ad left IR, and right IO and Left SR.", 'role': 'assistant'}]