How Should a Nurse Assist a Visually Impaired Patient to Ambulate

How should a nurse assist a visually impaired patient to ambulate?

A) Hold the visually impaired person by his or her nondominant arm and walk side by side.
B) Hold the nondominant hand, wrap the arm around his or her waist, and walk side by side.
C) Allow the visually impaired person to hold the helper's arm, with the helper slightly ahead.
D) Allow the visually impaired person to hold the shoulder of the helper and walk slightly behind the helper.