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: Psychiatry
[{'content': 'A patient on antipsychotic for past 4 weeks is brought to the emergency with complaint of acute onset of fever, excessive sweating, confusion, rigidity of limbs and decreased communication. Examination reveals temperature of 104°F; P/R - 120/min, BP-150/100 with disorientation. What is the most probable diagnosis - \nSelect and explain. \nA. Lithium toxicity, B. Aggrevation of psychosis, C. Dystonia, D. Neurolept malignant syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]