Parents of a Child Admitted to the Pediatric Ward Ask

Parents of a child admitted to the pediatric ward ask the nurse to tell them what causes acute glomerulonephritis because the pediatrician has mentioned this as a possible diagnosis. The correct answer by the nurse would be to tell the family that acute glomerulonephritis is an inflammation of glomeruli within the kidney caused by which of the following?

A) a bacterial or viral agent invading the child's system
B) habitual failure to flush the kidneys with sufficient fluid
C) an uncommon genetic defect involving a renin deficiency
D) failure of the adrenal glands to produce sufficient aldosterone