When Guarding a Patient on Steps, Which of the Following

When guarding a patient on steps, which of the following statements is true?

A) Always guard the patient on the weaker side while ascending and descending the stairs.
B) Always stand behind the patient while descending the stairs.
C) Always stand between the patient and the direction in which the patient is most likely to fall.
D) Always stand in front of the patient while ascending stairs.