In Addition to Treating a Diabetic Patient (Type 1) for Ketoacidosis

In addition to treating a diabetic patient (type 1) for ketoacidosis with insulin, why is a potassium salt often administered?

A) Insulin directly increases the excretion of potassium by the kidney.
B) Return of plasma pH and glucose to normal will lower the total body potassium content.
C) Return of plasma pH and glucose to normal is accompanied by a shift of potassium into cells.
D) Plasma potassium is usually low in diabetic ketoacidotic patients.
E) Return of plasma glucose to normal will cause a decrease in the plasma volume.