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: Social & Preventive Medicine
[{'content': 'Mumps most commonly affects the: March 2004 \nSelect and explain. \nA. Parotid gland, B. Submandibular gland, C. Sublingual gland, D. Lacrimal gland', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Parotid gland', 'role': 'assistant'}]