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
The walls of the orbit which are removed in the two wall decompression for proptosis of thyroid ophthalmopathy include pa of: 
Select and explain. 
A. Orbital floor and medial wall, B. Orbital floor and lateral wall, C. Orbital roof and medial wall, D. Medial and lateral walls
A: Orbital floor and medial wall
Answer: A: Orbital floor and medial wall 
Explanation: Ans. Orbital floor and medial wall