This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthetic equipments, Subject name: Anaesthesia
[{'content': 'Nasal intubation is contra indicated in - \nSelect and explain. \nA. CSF Rhinorrhea, B. Fracture cervical spine, C. Fracture mandible, D. Sho neck', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Indications : Cervical spine instability,trismus,Intraoral mass, severe angioedema Contraindications Absolute : Epiglotitis,Basilar skull fractures,significant mid face fractures Relative : Large nasal mass, nasal foreign body, recent nasal instrumentation, Epistaxis,CSF rhinorrhea, nasal or upper airway hematoma or infection', 'role': 'assistant'}]