This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Grave's ophthalmopathy mostly presents as September 2010 
Select and explain. 
A. Proptosis, B. Ptosis, C. Reduced intraocular tension, D. Increased power of convergence
A: Proptosis
Answer: A: Proptosis 
Explanation: Ans. A: Proptosis Graves' ophthalmopathy (also known as thyroid eye disease (TED), dysthyroid/thyroid-associated orbitopathy (TAO), Graves' orbitopathy) is an autoimmune inflammatory disorder affecting the orbit around the eye, characterized by upper eyelid retraction, swelling (edema), redness (erythema), conjunctivitis, reduce dpower convergence and bulging eyes (proptosis).