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': 'A child with erythematous non-blanching bosselated lesion on right side of the face, Rx is – \nSelect and explain. \nA. Erbium laser, B. Nd–YAG laser, C. Flash light pumped dye laser, D. Q ruby laser', 'role': 'user'}, {'content': 'Answer: C \nExplanation: "Non blanching bosselated lesion on right side of the face suggests port wine stain"\nTreatment of choice for port-wine stain is a yellow-pulsed dye laser often along with cryogen spray cooling.', 'role': 'assistant'}]