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': 'Muscle first affected in thyroid ophthalmopathy is: \nSelect and explain. \nA. Medial rectus, B. Lateral rectus, C. Inferior rectus, D. Superior rectus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Inferior rectusRef.: A.K. Khurana 6th ed. /414* In thyroid eye ophthalmopathy, the ocular motility defects due to restrictive myopathy (in order of frequency) are:# Elevation (due to fibrosis of inferior rectus)# Abduction (due to fibrosis of medial rectus)# Depression (due to fibrosis of superior rectus)# Adduction (due to fibrosis of lateral rectus).Mnemonic - "I M Shy Ladka"', 'role': 'assistant'}]