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
4 day old newborn baby having icterus involving sole, bilirubin level (mg/dl) - 
Select and explain. 
A. 12, B. 15, C. 8, D. 6
B: 15
Answer: B: 15 
Explanation: 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