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
Earliest symptom of thyroid ophthalmopathy - 
Select and explain. 
A. Proptosis, B. Lid retraction, C. Ophthalmoplegia, D. Diplopia
B: Lid retraction
Answer: B: Lid retraction 
Explanation: Retraction of the upper lids producing the characteristic staring and frightened appearance (Dalrymple's sign ) in 90% of cases Ref. Ak khurana 6th edition pg no 414 ref img