A client newly diagnosed with diabetes mellitus suddenly becomes confused and weak. Which intervention(s) should the nurse implement? Select all that apply.

A. Administering insulin would be inappropriate if the client is hypoglycemic, as it would further lower the blood glucose. B. Giving 4 ounces (120 mL) of orange juice provides a fast-acting source of glucose to treat hypoglycemia, which is likely causing confusion and weakness. C. A diet carbonated soda contains artificial sweeteners and may not provide the immediate glucose needed in this situation. D. Checking blood pressure and heart rate is important to assess for potential causes of the symptoms. E. A fingerstick blood glucose test is necessary to confirm if hypoglycemia is the cause of the symptoms.