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: Pediatrics
[{'content': 'Retinopathy of prematurity is commonly predisposed by – \nSelect and explain. \nA. Less gestation age, B. Low birth weight, C. O2 toxicity, D. Carbohydrate excess', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]