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: Surgery
[{'content': 'Improper direction of the needle insertion during inferior alveolar nerve block results in \nSelect and explain. \nA. Facial nerve paralysis, B. Paraesthesia, C. Hematoma, D. Trismus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]