The Patient Has a Potassium Level of 5

The patient has a potassium level of 5.9 mEq/L. The nurse is administering glucose and insulin. The patient's wife says, "He doesn't have diabetes, why is he getting insulin?" What is the best response by the nurse?

A) "Insulin will cause his extra potassium to go into his cells and lower the blood level."
B) "Insulin lowers his blood sugar levels and this is how the extra potassium is excreted."
C) "Insulin is safer than giving laxatives such as Kayexalate."
D) "Insulin will help his kidneys excrete the extra potassium."