This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
The most common ocular motility problem in thyroid myopathy is due to involvement of - 
Select and explain. 
A. Medial rectus, B. Superior rectus, C. lnferior rectus, D. Inferior oblique
C: lnferior rectus
Answer: C: lnferior rectus 
Explanation: Unilateral elavator palsy caused by an involvement of inferior rectus muscle. Ref . Ak khurana 6th edition pg no 414