This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'Fracture of mid face does not lead to \nSelect and explain. \nA. Proptosis, B. Lengthening of face, C. Malocclusion of teeth, D. Anesthesia of upper lip', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Proptosis is the forward protrusion or displacement of the eyeball. It does not occur in fracture of middle third of the face. It may occur in the fractures of the upper third of face especially fracture of the supraorbital ridge. Ref: Textbook of ENT; Dhingra; pg 181', 'role': 'assistant'}]