Which of the following actions, if performed by the nurse, is considered negligence?
1. Inserting a 16 Fr NG tube and aspirating 15 ml of gastric contents.
2. Administering Demerol IM to a patient prior to his using the incentive spirometer.
3. Administering ferrous sulfate (Feosol) 325 mg with coffee.
4. Initially administering blood at 5 ml/minute for 15 minutes.