A patient is newly diagnosed with type 1 diabetes mellitus. How should the nurse respond when the patient asks how long the insulin injections will be necessary?

"You may be able to stop the injections if you exercise regularly and adhere to the prescribed diet."

"Once your pancreas recovers, you may be able to discontinue the injections."

"If you follow your diet closely, your blood sugar may be controlled by just taking insulin pills."

"You will need insulin injections for the rest of your life."