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': 'Anti infective vitamin is – \nSelect and explain. \nA. Vitamin B6, B. Vitamin A, C. Vitamin D, D. Vitamin C', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Functions of Vit A\n\nVitamin A is essential for -\n\tI.Normal vision\n\n\nRetinol is necessory for functioning of retina.\nRegeneration of rhodopsin during dark light is vit A dependent --> vit A deficiency causes defective dark adaptation.\n\n2. Anti-infective\n\nVitamin A is necessary for integrity of epithelial tissues that resist invasion by pathogens.\nVitamin A has some role in immune response.\n\n3. Anticancer effect\n\nBeta-carotene has antioxidant property —> by virtue of this action it reduces the incidence of lung, breast, oral, esophageal and bladder cancers.\n\n4. Skeletal - growth\n\nVitamin A supports skeletal growth.', 'role': 'assistant'}]