To Prevent the Loss of Calcium and Protein,the Nurse Reminds

To prevent the loss of calcium and protein,the nurse reminds the patient with a recent below-the-knee amputation that he should:

A) Drink 1 to 2 L of fluid daily.
B) Ingest at least four milk products each day.
C) Ambulate 30 minutes a day.
D) Take vitamin supplements daily.