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': 'Kaloo, 40 year old adult man on medication for psychiatric illness for the last 2 weeks, suddenly develops marked rigidity, immobility, fever, fluetuating BP and hea rate. Most likely diagnosis ? \nSelect and explain. \nA. Akathisia, B. Parkinsonism, C. Malignant neuroleptic syndrome, D. Catatonic schizophrenia', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Neuroleptic malignant syndrome", 'role': 'assistant'}]