Problem: Samuel, a 2-year-old boy, is admitted to the pediatric intensive care unit (ICU) following corrective surgery for a congenital heart defect. The surgery required prolonged use of cardiopulmonary bypass. The resident managing the ICU knows that the use of cardiopulmonary bypass places Samuel at risk for developing AKI. The ICU team would like to calculate Samuel's baseline estimated glomerular filtration rate (eGFR) to monitor for changes in his renal function throughout his postoperative course. In addition to his preoperative sCr level, which other factor is needed to calculate his eGFR using the Schwartz equation? Need Professional Help? A. Age B. Weight C. Height D. Body mass index