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: Radiology
[{'content': 'Which consequence does not occur due to radiation: \nSelect and explain. \nA. Decreased visual acquity, B. Altered taste, C. Xerostomia, D. Mucositis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]