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: Anatomy
[{'content': 'Downward rotation, medial rotation and extortion of eye ball is facilitated by: \nSelect and explain. \nA. Superior rectus, B. Inferior rectus, C. Levator palpebrae superioris, D. Medial rectus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Actions of Individual Muscles\n\n\n\nLevator palpabrae superioris\nElevation of upper eyelid\n\n\nSuperior rectus\nUpward rotation, medial rotation and intortion\n\n\nInferior rectus\nDownward rotation, medial rotation and extortion\n\n\nMedial rectus\nMedial rotation\n\n\nLateral rectus\nLateral rotation\n\n\nSuperior oblique\nDownward rotation, lateral rotation and intortion\n\n\nInferior oblique\nUpward rotation, and extortion', 'role': 'assistant'}]