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
[{'content': 'The walls of the orbit which are removed in the two wall decompression for proptosis of thyroid ophthalmopathy include pa of: \nSelect and explain. \nA. Orbital floor and medial wall, B. Orbital floor and lateral wall, C. Orbital roof and medial wall, D. Medial and lateral walls', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Orbital floor and medial wall', 'role': 'assistant'}]