A Child Is Recovering at Home from Nephrotic Syndrome and Is

A child is recovering at home from nephrotic syndrome and is on a regimen of prednisone and antibiotics. The child's parents call the pediatric clinic and tell the nurse that their child is gaining a lot of weight. The nurse will first suspect which of the following possible causes of the weight gain?

A) ravenous appetite as a side effect of steroid therapy
B) sodium retention and concurrent retention of water
C) edema associated with steroid therapy
D) worsening or relapse of the nephrotic syndrome