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': 'In a 3 year old child, most common cause of hepatitis B is - \nSelect and explain. \nA. Pin prick, B. Saliva exchange, C. Perinatal, D. Blood transfusion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is \'d\' i.e., Blood transfusion "Children usually acquire infection indirectly, through parenteral route from hepatitis B contaminated blood transfusion". Other modes of transmission in children : - i) Sharing of contaminated hypodermic needles used for multiple doses of infection. ii) Shaving razors. iii) Sexual contact Adolescent boy & girls.', 'role': 'assistant'}]