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': 'A three days old infant develops jaundice upto thigh. " Mother\'s blood group O \'–ve\' and baby is A `+ve\' probable causes – \nSelect and explain. \nA. Physiological jaundice, B. Rh incompatibility, C. Septicemia, D. Extrahepatic biliary atresia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]