When bleeding is controlled with Sengstaken-Blakemore tube insertion, why should the esophageal balloon pressure be reduced by 5 mm Hg every 3 hours down to a pressure of 25 mm Hg?

a) To prevent esophageal rupture
b) To reduce the risk of gastric ischemia
c) To decrease the risk of aspiration
d) To minimize the risk of recurrent bleeding