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: Dental
[{'content': 'During intrauterine life, development of which of the following gland is earliest: \nSelect and explain. \nA. Parotid gland., B. Submaxillary gland., C. Sublingual gland., D. Submandibular gland.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Parotid: Development – 4-6 weeks IUL\nSubmandibular: Development – 6th week IUL\nSublingual: Development – 8-12 weeks IUL', 'role': 'assistant'}]