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: Unknown
[{'content': 'A 25 years old man presented to emergency ward with complaints of ‘stiffness and twisting’ of his neck and jaw. He describes these symptoms as very uncomfortable and completely involuntary. His medication include lithium and trifluphenazine. Which of the following is the next immediate step in management? \nSelect and explain. \nA. IV lorazepam, B. Benztropine IM, C. Diphenhydramine, D. Trifluophenazine', 'role': 'user'}, {'content': "Answer: B \nExplanation: (Refer: Harrison's Principles of Internal medicine, 18th edition, pg no: 3544)\n(Refer: Kaplan & Saddock's CTP 10th Ed Chap34.8 P7614)\nNeurological side effects of antiparkinson agents", 'role': 'assistant'}]