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: Pharmacology
[{'content': 'A psychotic female on phenothiazine therapy complains of sudden onset of high grade fever, muscle rigidity and altered sensorium. The diagnosis is: \nSelect and explain. \nA. Malignant hyperthermia, B. Neuroleptic malignant syndrome, C. Tardive dyskinesia, D. Akathisia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]