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
[{'content': 'Earliest symptom of thyroid ophthalmopathy - \nSelect and explain. \nA. Proptosis, B. Lid retraction, C. Ophthalmoplegia, D. Diplopia', 'role': 'user'}, {'content': "Answer: B \nExplanation: 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", 'role': 'assistant'}]