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: Anatomy
[{'content': 'Which of the following is the weakest part of the orbit? \nSelect and explain. \nA. Medial wall, B. Lateral wall, C. Floor of the orbit, D. Roof of the orbit', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Each orbit resembles four-sided pyramid, on one side. Thus, it has\n\nApex - situated postero-medially.\nBase.\nFour walls - Roof, floor, lateral and medial wall.\n\t\nLateral wall is the thickest and strongest of all the walls.\nMedial wall is very thin, so considered as the weakest.', 'role': 'assistant'}]