This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'Medial wall of the orbit is formed by all of the following except \nSelect and explain. \nA. Frontal process of maxilla, B. Orbital plate of frontal bone, C. Orbital plate of ethmoid bone, D. Small pa of the body of the sphenoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The medial wall of the orbit is the thinnest is formed by 4 bones; from before backwards, these are frontal process of maxilla, lacrimal process of maxilla, orbital plate of ethmoid, and body of sphenoid.Reference: Textbook of anatomy, Head Neck, and Brain, Vishram Singh, 2nd edition, page no.282', 'role': 'assistant'}]