A 3-week-old term baby is brought to the emergency department with visible jaundice noted within the first 12 hours of life and persisting. What is the most appropriate action?AReassure; prolonged jaundice is normal at this ageBStart phototherapy without any blood testsCUrgent assessment including serum bilirubin measurement and investigation for haemolysis or sepsisDAdvise sunlight exposure at home onlyEArrange routine clinic review in 2 weeksCheck my answer