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': 'Most common skin manifestation seen after 2 days of radiation therapy is? \nSelect and explain. \nA. Erythema, B. Atopy, C. Hyperpigmentation, D. Dermatitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Erythema Most common early (acute) manifestation of local skin reaction is erythemaQ which is followed by desquamation', 'role': 'assistant'}]