This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Digestive System Disorders, Subject name: Pediatrics
[{'content': '4 day old newborn baby having icterus involving sole, bilirubin level (mg/dl) - \nSelect and explain. \nA. 12, B. 15, C. 8, D. 6', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 15 mg/dl Dermal staining of biiirubin-o Described by kramero Jaundice progress in cephalocaudal directiono Divided in 5 zoneZone Bilirubin1) 4-6 mg/dl-Face2) 6-8 mg/dl-Trun k & upper abdomen3) 8-12 mg/dl-Lower abdomen & thign4) 12-14 mg/dl-Arm & leg5) > 15 mg/dl-Palm & sole", 'role': 'assistant'}]