Review Question - QID 108724

An 20-month-old African American female child is brought to the pediatrician by her mother with concerns that the child is not growing normally. The mother recently immigrated from Nigeria. She reports that the child was exclusively breastfed for her first and a half year of life and did not receive any nutritional supplements in the perinatal and postnatal periods. The patient’s height is at the 15th percentile for her age. On physical examination, the patient appears moderately malnourished. Prominent thickening of the rib heads at the osteochondral junction is noted. A radiographic image of the patient’s legs is shown in Figure A. Which of the following sets of lab findings is most consistent with this patient’s condition?