A 5-Year-Old Boy Has a History of Growth Retardation, Pulmonary

Multiple Choice

A 5-year-old boy has a history of growth retardation, pulmonary infections, and bulky, oily, malodorous stools. Which of the following test results would be expected in this patient?

A) Abnormal sweat chloride test
B) Low C₃ complement level
C) Abnormal nitroblue tetrazolium (NBT) dye test
D) Positive wheal and flare reaction with antigen scratch testing
E) Sputum with Gram-positive diplococci