This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Ophthalmology
[{'content': 'Dow nward and outward movement of eyeball is caused by \nSelect and explain. \nA. Inferior oblique, B. Superior oblique, C. Lateral rectus, D. Medial rectus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Superior obliqueACTIONS OF THE EXTRAOCULAR MUSCLESMusclePrimary actionSubsidiary actionsMedial Rectus (MR)AdductionNoneLateral Rectus (LR)AbductionNoneSuperior Rectus (SR)Elevation (best when eye is in abducted position)Incycloduction (intorsion) and adductionInferior Rectus (IR)Depression (best when eye is in abducted position)Excycloduction (extortion) and adductionSuperior Oblique (SO)Incycloduction (intorsion)Depression (best when eye is in adducted position) & abductionInferior Oblique (I0)Excycloduction (extortion)Elevation (best when eye is in adducted position) and abduction', 'role': 'assistant'}]