A Patient Undergoes an Esophagectomy with a Synthetic Graft Replacement

A patient undergoes an esophagectomy with a synthetic graft replacement for treatment of esophageal cancer.Following his return to the surgical unit,why should the nurse place the patient in a semi-Fowler's position?

A) To facilitate respiratory function
B) To prevent reflux of gastric secretions
C) To promote drainage from the NG tube
D) To promote movement of fluids through the GI tract